Oguz   Okay

SCIENTIFIC PUBLICATIONS 

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        a) In Journals                                       

        b) Patents 
       c) Others (national publ, thesis, reports)     
 
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Important:  The copyright of these papers belongs to the journal or publisher in each case. As such, while the papers can be accessed as PDF files (click on "pdf"), the online versions are for consultation purposes only.  The papers may not be reproduced, printed, copied or distributed in any form without the permission of the appropriate copyright holder.

 

Sciencefood, international recipes, Helholtz Zentrum Berlin  pdf

 
 

PUBLICATIONS

 

 

228. 4D Printing of Self-Healing and Shape-Memory Hydrogels Sensitive to Body Temperature.

G.  Aydin, T. Abdullah, O. Okay. Eur. Polym. J. 223, 113651 (2025)    pdf      SI

 

227. Design of electrospun hydrophobically modified polyacrylic acid hydrogel nanofibers and their application for removal of ciprofloxacins.

G. Ilyasoglu, T. Abdullah, O. Okay, I. Koyuncu, J Polym Environ (2025). https://doi.org/10.1007/s10924-025-03504-9     pdf      SI

 

226. Hexadecyl acrylate–based photo-curable resins for 4D printing of body temperature responsive hydrogels with shape-memory and self-healing properties.

Inventors: T. Abdullah, G. Aydin, O. Okay. Applicant: Istanbul Technical University. Publ. No WO/2024/263142, Publ. Date 26.12.2024, International Appl. No. PCT/TR2024/050687, International Filing Date 4.06.2024     pdf

 

225. Silk Fibroin-Based Multiple-Shape-Memory Organohydrogels.

C. B. Oral, E. Su, O. Okay, ACS Appl. Mater. Interfaces 16, 56146–56158 (2024)   pdf      SI   

 

224. Self-healing and shape-memory in mechanically robust hydrogels.

O. Okay, AsiaChem. 133 (2024)     pdf     

 

223. Melt-Processable and Electrospinnable Shape-Memory Hydrogels.

T.  Abdullah, C. Altınkok, O. Okay, Macromol. Mater. Eng. 2400166 (2024)     pdf      SI

 

222. Mechanically Robust Shape-Memory Organohydrogels Based on Silk Fibroin with Organogel Microinclusions of Various Sizes.

Y. Bas, O. Okay, Macromol. Mater. Eng. 2300129 (2023)     pdf      SI

 

221. Cryogelation reactions and cryogels: Principles and challenges.

O. Okay, Turk. J. Chem. 47, 910-926 (2023)   pdf      

 

220. Effects of Cryogenic Condition and Chemistry on the Properties of Synthetic and Biopolymer Cryogels.

G. Doser, E. Su, O.Okay, React. Funct. Polym. 190, 105635 (2023)  pdf      SI

 

219. Silk Fibroin Based Shape-Memory Organohydrogels with Semicrystalline Microinclusions.

C. B. Oral, B. Yetiskin, C. Cil, F. N. Kok, O. Okay. ACS Appl. Bio Mater. 6, 1594-1603 (2023)  pdf      SI 

 

218. 4D Printing of Body Temperature-Responsive Hydrogels Based on Polyacrylic Acid with Shape-Memory and Self-Healing Abilities.

T. Abdullah, O. Okay. ACS Appl. Bio Mater. 6, 703-711 (2023)   pdf      SI

 

217. Mechanically Strong Superabsorbent Terpolymer Hydrogels Based on AMPS via Hydrogen-Bonding Interactions.

B. Sekizkardes, E. Su, O. Okay. ACS Appl. Polym. Mater. 5, 2043−2050 (2023) pdf      SI

 

216. Roadmap to Design Mechanically Robust Copolymer Hydrogels Naturally Cross-Linked by Hydrogen Bonds.

C. Erkoc, E. Yildirim, M. Yurtsever, O. Okay, Macromolecules 55, 10576–10589 (2022)  pdf      SI

 

215. Sterilization studies of hydrogel nanocomposites designed for possible biomedical applications before in vivo research.

G. B. Sekitmen, E. Su, S. D. Gür, S. Ide, O. Okay, React. Funct. Polym. 180, 105393 (2022) pdf

 

214. Photocurable Methacrylated Silk Fibroin/Hyaluronic Acid Dual Macrocrosslinker System Generating Extracellular Matrix-Inspired Tough and Stretchable Hydrogels.

B. Yetiskin, B. Tavsanli, O. Okay, Macromol. Mater. Eng. 2200334 (2022)  pdf          SI

 

213. A silk fibroin cryogel building adaptive organohydrogels with switching mechanics and viscoelasticity.

B. Yetiskin, O. Okay, ACS Appl. Polym. Mater. 4, 7, 5234–5245 (2022)    pdf          SI

 

212. Polycyclic aromatic hydrocarbon accumulation performances of monophasic butyl rubber passive samplers.

O. E. Tureyen, S. D. Yakan, A. Yilmaz, B. Yetiskin, O. Okay, O. S. Okay, Environ. Process. 9, 34 (2022)                                                                          pdf

 

211. Butyl rubber as a macro-cross-linker in the preparation of a shape-memory and self-healing polymer.                 .

B.Tavsanli, C. Bilici, P. Sungur, S. Ide, O. Okay, J. Rheo. 66, 1367-1378 (2022)   pdf

 

210. Surface modification of graphene oxide for preparing self-healing nanocomposite hydrogels.               .

E. B. Ceper, E. Su, O. Okay, O. Güney, Polym. Adv. Technol. 33, 2276-2288 (2022)  pdf

 

209. Butyl rubber-based interpenetrating polymer networks with side chain crystallinity: Self-healing and shape-memory polymers with tunable thermal and mechanical properties.

E. Su, G. Bayazit, S. Ide, O. Okay, Eur. Polym. J. l68, 111098 (2022)   pdf          SI

 

208. Shape-memory semicrystalline interconnected IPNs based on various rubbers.

O. Akca, O. Okay, Macromol. Mater. Eng. 307, 2100776 (2022)    pdf          SI

 

207. Bisphosphonate-functionalized poly(amido amine) crosslinked 2-hydroxyethyl methacrylate hydrogel as tissue engineering scaffold .

M. N. Guven, B. Balaban,, G. Demirci, H. Y. Acar, O. Okay, D. Avci, Eur. Polym. J. 159, 110732 (2021).                                                               pdf 

 

206. “Reentrant Conformation Transition in Hydrogels”

O. Okay, Gels 7, 98 (2021).                    pdf    

 

205. “Solvent-free UV polymerization of n-octadecyl acrylate in butyl rubber: A simple way to produce tough and smart polymeric materials at ambient temperature”

E. Su, C. Bilici, G. Bayazit, S. Ide, O. Okay, ACS Appl. Mater. Interfaces 13, 21786–21799 (2021)                                                                      pdf          SI

 

204.  “Behaviors of quenched polyampholytes in solution and gel state”

S. E. Kudaibergenov, O. Okay, Polym. Polym Adv Technol. 32, 2639–2654 (2021) (pdf )

 

203. “Performance of butyl rubber-based macroporous sorbents as passive samplers”

O. E. Tureyen, A. Yilmaz, S. D. Yakan, B. Yetiskin, O. Okay, O. S. Okay, Environ. Sci. Poll. Res. 28, 3766–3773 (2021)  pdf   SI        

 

202. “Self-Healing and Self-Recovering Hydrogels”

C. Creton, O. Okay (eds.) Advances in Polymer Science 285, Springer,  2020.

 

201. “How to design both mechanically strong and self-healable hydrogels?”

O. Okay, Adv. Polym. Sci. 285, 21-62 (2020)   pdf      

 

200. “Self-healing and shape-memory hydrogels”

O. Okay, HJBC 48, 507-525 (2020)   pdf      

 

199. “Stretchable silk fibroin hydrogels”

C. B. Oral, B. Yetiskin, O. Okay, Int. J. Bio. Macromol. 161, 1371-1380 (2020) pdf          SI

 

198. “Alendronate-functionalized poly(amido amine) cryogels of high-toughness for biomedical applications”

M. N. Guven, G. Demirci, S. Altuncu, U. Gulyuz, O. Okay, H.Y. Acar, D. Avci, Polymer 190, 122248, 1-11 (2020)                                                                                                pdf          SI  

 

197. “Highly stretchable and thermally healable polyampholyte hydrogels via hydrophobic modification”

G. Toleutay, E. Su, S. Kudaibergenov, O. Okay, Colloid Polym. Sci. 298, 273-284 (2020)  pdf  SI     

 

196. Preparation of dextran cryogels for separation processes of binary dye and pesticide mixtures from aqueous solutions. B. Ari, B. Yetiskin, O. Okay, N. Sahiner,  Polym. Eng. Sci. 60, 1890-1901 (2020)        pdf          SI

 

195. “Macroporous hyaluronic acid cryogels of high mechanical strength and flow-dependent viscoelasticity”

B. Tavsanli, O. Okay, Carbohyd. Polym. 229, 115458, 1-10 (2020)          pdf          SI  

 

194. “Hydrophobically modified nanocomposite hydrogels with self-healing ability”

O. Akca, B. Yetiskin, O. Okay, J. Appl. Polym. Sci 137, 48853, 1 - 8 (2020)     pdf          

 

193. “Single-, double-, and triple-network macroporous rubbers as a passive sampler”

B. Yetiskin, O. E. Tureyen, A. Yilmaz, S. D. Yakan, O. S. Okay, O. Okay, ACS Appl. Mater. Interfaces 11, 28317−28326 (2019)                                             pdf          SI  

 

192. “A self-healing and highly stretchable polyelectrolyte hydrogel via cooperative hydrogen-bonding as a superabsorbent polymer”

E. Su, M. Yurtsever, O. Okay, Macromolecules 52, 3257-3267 (2019)            pdf          SI  

 

191. “One-step injectable and bioreducible poly(β-amino ester) hydrogels as controlled drug delivery  platform”

H. B. Bingol, M. S. Altuncu, F. D. Demir, A. Ak, U. Gulyuz, H. Y. Acar, O. Okay, D. Avci, ACS Appl. Polym. Mater. 1, 1724−1734 (2019)      pdf          SI  

 

190. “Cryogenic formation-structure-property relationships of poly(2-acrylamido-2-methyl-1-propanesulfonic acid) cryogels”

E. Su, O. Okay, Polymer 178, 121603, 1-9 (2019)    pdf          SI  

 

189. “Cryogel composites based on hyaluronic acid and halloysite nanotubes as scaffold for tissue engineering”

S. S. Suner, S. Demirci, B. Yetiskin, R. Fakhrullin, E. Naumenko, O. Okay, R. S. Ayyala, N. Sahiner, Int. J. Bio. Macromol. 130, 627–635 (2019)                               pdf               

 

188. “Semicrystalline physical hydrogels with shape-memory and self-healing properties”

O. Okay, J. Mater. Chem. B. 7, 1581-1596 (2019)                           pdf            

 

187. “Mechanically robust and stretchable silk/hyaluronic acid hydrogels”

B. Tavsanli, O. Okay, Carbohyd. Polym. 208, 413-420 (2019)          pdf          SI  

 

186. “Structure-property relationships of novel phosphonate-functionalized networks and gels of poly (b-amino esters)”

S. Altuncu, F. D. Duman, U. Gulyuz, H. Y. Acar, O. Okay, D. Avci, Eur. Polym. J. 113, 155-164 (2019)                                                                     pdf          SI  

 

185. “Highly-Stretchable and Rapid Self-Recoverable Cryogels Based on Butyl Rubber as Reusable Sorbents”

S. Muslumova, B. Yetiskin, O. Okay, Gels 5, 1  (2019)     pdf          SI  

 

184. “Semi-crystalline, three-segmented hybrid gels with multiple shape memory effect”

A. Argun, U. Gulyuz, O. Okay,  Macromol. Symp. 385, 1800164 (2019)        pdf    

 

183. “High-strength and self-recoverable silk fibroin cryogels with anisotropic swelling and mechanical properties”

B. Yetiskin, O. Okay, Int. J. Bio. Macromol. 122, 1279-1289 (2019)   pdf          SI  

 

182. "Production of self-healable and shape memory butyl rubber”

O. Okay, C. Bilici, 

T. C. Patent, TR 2019 09028 A2 (2019)           pdf  

 

181. “Monitoring the instant creation of a new fluorescent signal for evaluation of DNA conformation based on intercalation complex”

A. T. Uzumcu, O. Guney, O. Okay, J. Fluoresc. 28, 1325-1332  (2018)  pdf          SI

 

180. “Bisphosphonic acid functionalized crosslinkers to tailor hydrogel properties for biomedical applications”

M.N. Guven, M.S. Altuncu, T. Bal, D. Oran, U. Gulyuz, S. Kizilel, O. Okay, D. Avci,

ACS Omega, 3, 8638–8647 (2018)      pdf          SI

 

179. “Toughness improvement and anisotropy in semicrystalline physical hydrogels”

C. Bilici, D. Karaarslan, S. Ide, O. Okay, Polymer 151, 208–217 (2018)  ,   pdf          SI

 

178. “Interfacing soft and hard materials with triple-shape-memory and self-healing functions”

A. Argun, U. Gulyuz, O. Okay, Macromolecules 51, 2437-2446 (2018)                        pdf          SI

 

177. “Highly stretchable DNA/clay hydrogels with self-healing ability”

A. T. Uzumcu, O. Guney, O. Okay,  ACS Appl. Mater. Interfaces 10, 8296-8306 (2018)                pdf          SI

 

176. “Hybrid cross-linked poly(2-acrylamido-2-methyl-1-propanesulfonic acid) hydrogels with tunable viscoelastic, mechanical and self-healing properties”

E. Su, O. Okay, React. Funct. Polym. 123, 70-79 (2018)                         pdf          SI

 

175. “Cryogelation within cryogels:  Silk fibroin scaffolds with single-, double- and triple-network structures”

B. Yetiskin, C. Akinci, O. Okay, Polymer 128, 47-56 (2017)                    pdf          SI

 

174. “Mechanically strong hyaluronic acid hydrogels with an interpenetrating network structure”

B. Tavsanli, O. Okay, Eur. Polym. J. 90, 185-195 (2017)                            pdf         

 

173. “Yielding behavior of tough semicrystalline hydrogels”

C. Bilici, S. Ide, O. Okay, Macromolecules 50, 3647-3654 (2017)            pdf          SI

 

172. “High-strength silk fibroin scaffolds with anisotropic mechanical properties”

B. Yetiskin, O. Okay, Polymer 112, 61-70 (2017)                             pdf          SI

 

171. “Polyampholyte hydrogels formed via electrostatic and hydrophobic interactions”

E. Su, O. Okay, Eur. Polym. J. 88, 191-204 (2017)                            pdf          SI

 

170. “Reversibility of strain stiffening in silk fibroin gels”

Z. Oztoprak, O. Okay. Int. J. Bio. Macromol. 95, 24-31 (2017)       pdf          SI

 

169. “Nanocomposite DNA hydrogels with temperature sensitivity”

A. T. Uzumcu, O. Guney, O. Okay. Polymer 100, 169-178 (2016)   pdf           SI

 

168. “Preparation and fracture process of high strength hyaluronic acid hydrogels cross-linked by ethylene glycol diglycidyl ether”

B. Tavsanli, O. Okay. React. Funct. Polym. 109, 42-51 (2016)       pdf  

 

167. “Melt-processable shape-memory hydrogels with self-healing ability of high mechanical strength”

C. Bilici, V. Can, U. Nöchel, M. Behl, A. Lendlein, O. Okay. Macromolecules 49, 7442-7449 (2016)                  pdf           SI

 

166. “High-strength semi-crystalline hydrogels with self-healing and shape memory functions”

B. Kurt, U. Gulyuz, D. D. Demir, O. Okay, Eur. Polym. J. 81, 12-23  (2016)  pdf           SI

 

165. “Nanostructural Evolution and Self-Healing Mechanism of Micellar Hydrogels”

V. Can, Z. Kochovski, V. Reiter, N. Severin, M. Siebenbürger, B. Kent, J. Just,  J. P. Rabe, M. Ballauff,  O. Okay  Macromolecules 49, 2281-2287 (2016)         pdf           SI 

 

164. “Self-Healing Poly(acrylic acid) Hydrogels: Effect of Surfactant”

U. Gulyuz, O. Okay, Macromol. Symp. 358, 232–238 (2015)                                                                                                                                                                pdf

 

163. “Mechanically strong triple network hydrogels based on hyaluronan and poly(N,N-dimethylacrylamide)”

B. Tavsanli, V. Can, O. Okay, Soft Matter 11, 8517-8524 (2015)                                                                                                                                              pdf           SI 

                                                                                                                                                                         

162. “Self-healing poly(N-isopropylacrylamide) hydrogels”

U. Gulyuz, O. Okay, Eur. Polym. J. 72, 12-22 (2015)                                                                                                                                                                pdf           SI                                                                                                                                       

 

161. “Self-healing hydrogels formed via hydrophobic interactions”

O. Okay, Adv. Polym. Sci. 268,101-142 (2015)                                                                                                                                                                                       pdf

 

160. “Preparation and physical properties of hyaluronic acid-based cryogels”

A. Strom,  A. Larsson, O. Okay, J. Appl. Polym. Sci. 132, 42194 (2015)                                                                                                                                                      pdf

 

159. “Self-healing poly(acrylic acid) hydrogels with shape memory behavior of  high mechanical strength”

U. Gulyuz, O. Okay, Macromolecules 47, 6889-6899 (2014)                                                                                                                                                          pdf            SI    

 

158. “Non-ionic double and triple network hydrogels of high mechanical strength”

A. Argun, V. Can, U. Altun, O. Okay, Macromolecules 47, 6430-6440 (2014)                                                                                                                              pdf            SI    

 

157.  “Polymeric Cryogels: Macroporous Gels with Remarkable Properties”

O. Okay (ed.) Advances in Polymer Science 263, Springer, 2014.

 

   

156. “Synthesis and structure–property relationships of cryogels”

O. Okay, V. I. Lozinsky, Adv. Polym. Sci. 263, 103-157 (2014)                                                                                                                                                     pdf

       

155. “Basic principles of cryotropic gelation”

V. I. Lozinsky, O. Okay, Adv. Polym. Sci. 263, 49-101 (2014)                                                                                                                                                        pdf

 

154. “Highly stretchable self-healing poly(N,N-dimethylacrylamide) hydrogels”

M. P. Algi, O. Okay, Eur. Polym. J. 59, 113-121 (2014)                                                                                                                                                                 pdf            SI 

 

153. “Porous rubber cryogels: effect of the gel preparation temperature”

Z. Oztoprak, T. Hekimoglu, I. Karakutuk, D. C. Tuncaboylu, O. Okay, Polym. Bull. 71, 1983-1990 (2014)                                                                                  pdf  

             

152. “Surfactant-induced healing of tough hydrogels formed via hydrophobic interactions”

A. Argun, M. P. Algi, D. C. Tuncaboylu, O. Okay, Colloid Polym. Sci. 292, 511-517 (2014)                                                                                                          pdf  

 

151. “Autonomic self-healing in covalently crosslinked hydrogels containing hydrophobic domains”

D. C. Tuncaboylu, A. Argun, M. P. Algi,  O. Okay, Polymer 54 (23), 6381-6388 (2013)                                                                                                          pdf                              

 

150. “Self-healing polyacrylic acid hydrogels”

U. Gulyuz, O. Okay, Soft Matter 9 (43), 10287-10293 (2013)                                                                                                                                                             pdf          SI  

 

149. “Shape memory hydrogels via micellar copolymerization of acrylic acid and n-octadecyl acrylate in aqueous media”

C. Bilici, O. Okay, Macromolecules 46, 3125-3131 (2013)                                                                                                                                                                                   pdf                         SI 

 

148. “Tough interpenetrating Pluronic F127/polyacrylic acid hydrogels”

T. Baskan, D.C. Tuncaboylu, O. Okay,  Polymer 54, 2979-2987 (2013)                                                                                                                                                               pdf          SI 

                                    

147. “Macroporous silk fibroin cryogels.”

F. Ak, Z. Oztoprak, I. Karakutuk, O. Okay, Biomacromolecules 14, 719-727 (2013)                                                                                                                                   pdf                         SI   

 

146. “Self-healing hydrogels formed in catanionic surfactant solutions.”

G. Akay, A. Hassan-Raeisi, D.C. Tuncaboylu, N. Orakdogen, S. Abdurrahmanoglu, W. Oppermann, O. Okay, Soft Matter 9, 2254-2261 (2013)                                       pdf                         SI   

 

145.  “Swelling behavior of physical and chemical DNA hydrogels.”

P. Karacan P, H. Cakmak, O. Okay,  J. Appl. Polym. Sci. 128, 3330-3337 (2013)                                                                                                                                             pdf

 

144.  “Ethidium bromide binding to DNA cryogels.”

P. Karacan, O. Okay, React. Funct. Polym. 73, 442-450 (2013)                                                                                                                                                                             pdf          SI

 

143. “Structure optimization of self-healing hydrogels formed via hydrophobic interactions.”

D. C. Tuncaboylu, A. Argun, M. Sahin, M. Sari, O. Okay, Polymer 53 (24), 5513-5522 (2012)                                                                                                                pdf                         SI

 

142. “Dynamics and large strain behavior of self-healing hydrogels with and without surfactants.”

D. C. Tuncaboylu, M. Sahin, A. Argun, W. Oppermann, O. Okay, Macromolecules 45 (4), 1991-2000 (2012)                                                                                                            pdf                         SI           

 

141.  “Diepoxide-triggered conformational transition of silk fibroin: Formation of hydrogels.”

I. Karakutuk,  F. Ak,  O. Okay,  Biomacromolecules 13 (4), 1122-1128 (2012)                                                                                                                                                           pdf               SI

 

140.  “Tough and self-healing hydrogels formed via hydrophobic interactions.”

D. C. Tuncaboylu, M. Sarı, W. Oppermann, O. Okay, Macromolecules 44, 4997-5005 (2011)                                                                                                                            pdf                         SI

 

139.  “Macroporous, responsive DNA cryogel beads.”

N. Orakdogen, P. Karacan, O. Okay, React. Funct. Polym. 71, 782-790 (2011)                                                                                                                                                           pdf

 

138.  “DNA hydrogels: New functional soft materials.”

O. Okay, J. Polym. Sci. B:  Polymer Phys. 49, 551-556 (2011)                                                                                                                                                                              pdf

 

137.  “Solution cross-linked natural rubber (NR) / clay aerogel composites.”

T. Pojanavaraphan, L. Liu, D. Ceylan, O. Okay, R. Magaraphan, D. A. Schiraldi, Macromolecules  44, 923-931 (2011)                                                                          pdf                         SI

 

136.  “Dodecyl methacrylate as a crosslinker in the preparation of tough polyacrylamide hydrogels.”

S. Abdurrahmanoglu, M. Cilingir, O. Okay,  Polymer 52, 694-699 (2011)                                                                                                                                                            pdf               SI

 

135.  “Self-oscillating pH-responsive cryogels as possible candidates of soft materials for generating mechanical energy”

C. Bilici, S. Karayel, T.T. Demir, O. Okay,  J. Appl. Polym. Sci. 118, 2981-2988 (2010)                                                                                                                                          pdf

 

134.  “Macroporous rubber gels as reusable sorbents for the removal of oil from surface waters”

I. Karakutuk, O.  Okay,  React. Funct. Polym.  70, 585-595 (2010)                                                                                                                                                                         pdf

 

133.  “Evidence of strain hardening in DNA gels”

N. Orakdogen, B. Erman, O.  Okay, Macromolecules 43 (3), 1530-1538 (2010)           pdf                         SI

 

132.  “Effect of nanoscale interactions on the rheological behavior of polymer – clay nanocomposite hydrogels”

S. Abdurrahmanoglu,  O. Okay,  J. Appl. Polym. Sci.  116, 2328-2335 (2010)              pdf

 

131.  “Hierarchically macroporous cryogels of polyisobutylene and silica nanoparticles”

D.C. Tuncaboylu,  O. Okay, Langmuir 26 (10), 7574–7581 (2010)                pdf                         SI

 

130.  “Design of high-toughness polyacrylamide hydrogels by hydrophobic modification”

S. Abdurrahmanoglu, V. Can,  O. Okay, Polymer 50, 5449-5455 (2009)                       pdf                         SI

 

129.   “Formation of hydrogels by simultaneous denaturation and cross-linking of DNA”

F. Topuz, O. Okay, Biomacromolecules 10, 2652-2661 (2009)                                      pdf                         SI

 

128.  “Preparation and characterization of single-hole macroporous organogel particles of high toughness and superfast responsivity”

D.C. Tuncaboylu, O. Okay O, Eur. Polym. J. 45 (7), 2033-2042 (2009)                        pdf

 

127.  “Evaluation of butyl rubber as sorbent material for the removal of oil and polycyclic aromatic hydrocarbons from seawater”

D. Ceylan, S. Dogu, B.Karacik, S.D. Yakan, O.S. Okay, O. Okay, Environ. Sci. Technol. 43 (10), 3846-3852 (2009)     pdf                         SI

 

126.  “Macroporous hydrogel beads of high toughness and superfast responsivity” 

F. Topuz, O. Okay,  React. Funct. Polym.  69, 273-280 (2009)       pdf

 

125.  “Collapse of acrylamide-based polyampholyte hydrogels in water”

S. Dogu, M. Kilic, O. Okay, J. Appl. Polym. Sci. 113, 1375-1382 (2009)      pdf

 

124. "Production of macroporous reusable rubber sorbent for removal organic pollutants from water” (Organik kirleticilerin sulardan uzaklaştırılması için makrogözenekli, tekrar kullanılabilir kauçuk sorbent üretimi)

O. Okay, I. Karakutuk, D. Ceylan, O.S. Okay, 

T. C. Patent, TR200909456 (2009)

 

123.  “General properties of hydrogels”

O. Okay, in G. Gerlach and K.-F. Arndt, eds., Hydrogel sensors and actuators, Springer Series on Chemical Sensors and Biosensors, Vol. 6, pp. , Springer, 2009.    pdf

 

122. “Production of macroporous polymeric materials by phase separation polymerization”

O. Okay,  in B. Mattiasson, A. Kumar, and I. Y. Galaev, eds., Macroporous polymers: Production, properties and biotechnological/biomedical application, CRC Press, Taylor and Francis Group, Boca Raton, FL, 2009.

 

121.  “Rheological behavior of responsive DNA hydrogels”

F. Topuz, O. Okay, Macromolecules 41, 8847-8854 (2008)                            pdf                         SI

 

120.  “Homogeneous poly(acrylamide) hydrogels made by large size, flexible dimethacrylate crosslinkers”

S. Abdurrahmanoglu, O. Okay, Macromolecules 41, 7759-7761 (2008)         pdf                         SI

 

119.  “Tough organogels based on polyisobutylene with aligned porous structures”

S. Dogu, O. Okay, Polymer 49, 4626-4634 (2008)                                          pdf

 

118.  “Formation of macroporous poly(acrylamide) hydrogels in DMSO/water mixture:  Transition from cryogelation to phase separation copolymerization”

M. M. Ozmen, O. Okay, React. Funct. Polym 68, 1467-1475 (2008)              pdf

 

117.  “Preparation of Homogeneous Hydrogels by Controlling the Crosslinker Reactivity and Availability”

S. Abdurrahmanoglu, O. Okay,  J. Macromol. Sci. A: Pure and Appl. Chem. 45, 769-775 (2008)              pdf

 

116.  “Equilibrium swelling behavior and elastic properties of polymer-clay nanocomposite hydrogels”

S. Abdurrahmanoglu, V. Can, O. Okay,  J. Appl. Polym. Sci. 109, 3714-3724 (2008)                 pdf  

 

115.  “Preparation of macroporous poly(acrylamide) hydrogels in DMSO/water mixture at subzero temperatures“

M.M. Ozmen, M.V. Dinu, O. Okay,  Polymer Bull. 60, 169-180 (2008)                                                      pdf

 

114.  “Macroporous polyisobutylene gels: A novel tough organogel with superfast responsivity”

D. Ceylan, O. Okay, Macromolecules 40, 8742-8749 (2007)                                                         pdf

 

113.  “Unusual swelling behavior of polymer-clay nanocomposite hydrogels”

V. Can, S. Abdurrahmanoglu, O. Okay, Polymer 48, 5016-5023 (2007)                                       pdf

 

112.  “Preparation of homogeneous polyacrylamide hydrogels by free-radical crosslinking copolymerization”

E. A. Kuru, N. Orakdogen, O. Okay,  Eur. Polym. J. 43, 2913-2921 (2007)                  pdf

 

111.  “Preparation of Macroporous Acrylamide-based Hydrogels: Cryogelation under Isothermal Conditions” 

M. M. Ozmen, M. V. Dinu, E. S. Dragan, O. Okay,  J. Macromol. Sci. A: Pure and Appl. Chem. 44, 1195-1202 (2007)           pdf

 

110.  “Polyacrylamide - clay nanocomposite hydrogels: Rheological and light scattering characterization”

O. Okay, and W. Oppermann, Macromolecules 40, 3378-3387 (2007)                                  pdf                 SI

 

109.  “Macroporous hydrogels from smart polymers”,

O. Okay, in B. Mattiasson and I. Galaev, eds., Smart Polymers: Production, Study and Application in Biotechnology and Biomedicine, 2nd edition, pp. 269-299, CRC Press, Taylor and Francis, Boca Raton, FL, 2007.

 

108.  “Influence of the initiator system on the spatial inhomogeneity in acrylamide-based hydrogels”

N. Orakdogen N, and O. Okay, J. Appl. Polym. Sci. 103, 3228-3237 (2007)  pdf

 

107.  “Freezing as a path to built macroporous structures: Superfast responsive polyacrylamide hydrogels”

M. V. Dinu, M. M. Ozmen, E. S. Dragan, and O. Okay, Polymer 48, 195-204 (2007)          pdf

 

106.  “Network Development in Mixed Step-Chain Growth Thiol-Vinyl Photopolymerizations”

S.K. Reddy, O. Okay, and C.N. Bowman, Macromolecules 39, 8832-8843 (2006)               pdf

 

105.  “Preparation of novel macroporous sorbents and use of them for the removal of oil spills from surface waters” (Petrol döküntülerinin yüzey sularından uzaklaştırılması için yeni bir makrogözenekli sorbent üretimi ve uygulaması)

O. Okay, and D. Ceylan,  

T. C. Patent, TR20070001790 20070321 (2007)

 

104.  “Correlation between crosslinking efficiency and spatial inhomogeneity in poly(acrylamide)hydrogels” 

N. Orakdogen, and O. Okay, Polymer Bulletin 57, 631-641 (2006)                pdf

 

103.  “Superfast responsive ionic hydrogels: Effect of the monomer concentration” 

M.M. Ozmen, and O. Okay,  J. Macromol. Sci. A: Pure and Appl. Chem. 43, 1215-1225 (2006)               pdf

 

102.  “Phase transition of acrylamide-based polyampholyte gels in water” 

D. Ceylan, V. Can, and O. Okay,   J. Macromol. Sci. A: Pure and Appl. Chem. 43, 1635-1649 (2006)      pdf

 

101.  “Swelling-deswelling kinetics of poly(acrylamide) hydrogels and cryogels”

D. Ceylan, M.M. Ozmen, and O. Okay, J. Appl. Polym. Sci. 99, 319-325 (2006)                                        pdf

 

100.  “Effect of initial monomer concentration on the equilibrium swelling and elasticity of hydrogels”

N. Orakdogen, and O. Okay,  Eur. Polym. J. 42 (2006)                                                                                 pdf

 

99.  “Swelling-deswelling kinetics of poly(N-isopropylacrylamide) hydrogels formed in PEG solutions”

Y. Dogu, and O. Okay, J. Appl. Polym. Sci. 99, 37-44 (2006)                                                                      pdf

 

98.  “Reentrant conformation transition in poly(N,N-dimethylacrylamide) hydrogels in water-organic solvent mixtures”

N. Orakdogen, and O. Okay, Polymer 47, 561-568 (2006)                                                                            pdf 

 

97.  “Suppression of inhomogeneities in hydrogels formed by free-radical crosslinking copolymerization”

N. Orakdogen, M.Y. Kizilay, and O. Okay, Polymer 46, 11407-11415 (2005)                                            pdf

 

96.  “Superfast responsive ionic hydrogels with contrallable pore size”

M.M. Ozmen, and O. Okay, Polymer 46, 8119-8127 (2005)                                                                         pdf

 

95.  “Shake gels based on Laponite-PEO mixtures: Effect of polymer molecular weight”

V. Can, and O. Okay,  Designed Monomers Polymers 8, 453-462 (2005)                                                    pdf

 

94.  “Molecular weight development during thiol-ene photopolymerizations”

O. Okay, S.K. Reddy, and C.N. Bowman,  Macromolecules 38, 4501-4511 (2005)                                     pdf

 

93.  “Kinetic modeling of thiol-ene reactions with both step and chain growth aspects”

O. Okay, and C.N. Bowman, Macromol. Theory Simul. 14, 267-277 (2005)                                   pdf                        

 

92.   “Spatial inhomogeneity in poly(acrylic acid) hydrogels”

Yazici, and O. Okay, Polymer 46, 2595-2602 (2005)                                                                                    pdf

 

91.  “Effect of spatial gel inhomogeneity on the elastic modulus of strong polyelectrolyte hydrogels”

Ozdogan, and O. Okay, Polymer Bull. 54, 435-442 (2005)                                                                           pdf

 

90.  “Non-Gaussian elasticity of poly(2-acrylamido-2-methylpropane sulfonic acid) gels”

M.M. Ozmen, and  O. Okay, Polymer Bull. 52, 83-90 (2004)                                                                       pdf

 

89.  “Swelling, elasticity and spatial inhomogeneity of poly(N,N-dimethylacrylamide) hydrogels formed at various polymer concentrations”

N. Gundogan, O. Okay and W. Oppermann, Macromol. Chem. Phys. 205, 814-823 (2004)                    pdf         

 

88.  “Effect of swelling on spatial inhomogeneity in poly(acrylamide) gels formed at various monomer concentrations”

M.Y. Kızılay, and O. Okay, Polymer 45, 2576-2576 (2004)                                                                         pdf

 

87.  “Swelling and elasticity of poly(N-isopropylacrylamide-co-4-vinylbenzenesulfonic acid sodium salt) hydrogels”

N. Gundogan, D. Melekaslan, and O. Okay, J. Appl. Polym. Sci. 94, 135-141 (2004)                  pdf

 

86.  “Minimization of spatial inhomogeneity in polystyrene gels formed by free-radical mechanism”

H. Cerid, and O. Okay, Eur. Polym. J. 40, 579-587 (2004)                                                                           pdf

 

85.  “Swelling and elasticity of hydrogels based on a poly(ethylene oxide) macroinimer”

D. Melekaslan, F. Kasapoglu, K. Ito, Y. Yagci, and O. Okay, Polymer International 53, 237-242 (2004)  pdf

 

84.  “Non-Gaussian elasticity of swollen poly(N-isopropylacrylamide) gels at high charge densities”

N. Gundogan, D. Melekaslan, and O. Okay, Eur. Polym. J. 39, 2209-2216 (2003)                                      pdf

 

83.  “Effect of hydrolysis on spatial inhomogeneity in poly(acrylamide) gels of various crosslink densities”

M.Y. Kızılay, and O. Okay, Polymer 44, 5239-5250 (2003)                                                          pdf

 

82.  “Elasticity of poly(acrylamide) gel beads”

D. Melekaslan, N. Gundogan, and O. Okay, Polymer Bull. 50, 287-294 (2003)                           pdf

 

81.  “Swelling behavior of strong polyelectrolyte poly(N-t-butyl acrylamide-co-acrylamide) hydrogels”

M.M. Ozmen, and O. Okay, Eur. Polym. J. 39, 877-886 (2003)                                                                   pdf

 

80.  “Effect of initial monomer concentration on spatial inhomogeneity in poly(acrylamide) gels”

M.Y. Kızılay, and O. Okay, Macromolecules 36, 6856-6862 (2003)                                                            pdf

 

79.  “Swelling and elasticity of poly(N-isopropylacrylamide) gels immersed in the melt of poly(ethylene glycol) chains”

D. Melekaslan, N. Gundogan, and O. Okay, Polymer 44, 2281-2288 (2003)                                pdf

 

78.  “Temperature dependent swelling behavior of ionic poly(N-isopropylacrylamide) gels in PEG solutions”

D. Melekaslan, and O. Okay, Polymer Bull. 49, 181-188 (2002)                                                                  pdf

 

77.  “Temperature sensitive poly(N-t-butyl acrylamide-co-acrylamide) hydrogels: synthesis and swelling behavior”

V. Ozturk, and O. Okay, Polymer 43, 5017-5026 (2002)                                                               pdf   

 

76.  “Rubber elasticity of poly(N-isopropylacrylamide) gels at various charge densities”

N. Gundogan, D. Melekaslan, and O. Okay, Macromolecules 35, 5616-5622 (2002)                                  pdf

 

75.  “Macroporous poly(N-isopropylacrylamide) networks”

C. Sayil, and O. Okay, Polymer Bull.  48, 499-506 (2002)                                                                           pdf      

 

74.  “Swelling and mechanical properties of solution crosslinked poly(isobutylene) gels”

S. Durmaz, S. Fank, and O. Okay, Macromol. Chem. Phys. 203, 663-672 (2002)                                       pdf   

 

73.  “Real time temperature and photon transmission measurements for monitoring phase separation during the formation of poly(N-isopropylacrylamide) gels”

S. Kara, O. Okay, and  O. Pekcan, J. Appl. Polym. Sci. 86, 3589- 3595 (2002)                                           pdf

 

72.  “Volume phase transition of polymer networks in polymeric solvents”

O. Okay, and N. Gundogan, Macromol. Theory Simul. 11, 287-292 (2002)                                 pdf  

 

71.  “Reentrant phase transition of poly(N-isopropylacrylamide) gels in polymer solutions: Thermodynamic analysis”

N. Gundogan, and O. Okay, J. Appl. Polym. Sci.  85, 801-813 (2002)                                                         pdf       

 

70.  “Charge density dependence of elastic modulus of strong polyelectrolyte hydrogels”

O. Okay, and S. Durmaz, Polymer  43, 1215-1221 (2002)                                                                            pdf            

 

69.  “Swelling-shrinking hysteresis of poly(N-isopropyl)acrylamide) gels in sodium dodecylbenzenesulfonate solutions”

C. Sayil, and O. Okay, J. Appl. Polym. Sci. 83, 1228-1232 (2002)                                                               pdf           

 

68.  “Inhomogeneities in poly(acrylamide) gels: Position-dependent elastic modulus measurements”

S. Durmaz, and O. Okay, Polymer Bull. 46, 409 - 418 (2001)                                                                      pdf                 

 

67.  “Macroporous poly(N-isopropyl) acrylamide networks: Formation conditions”

C. Sayil, and O. Okay, Polymer 42, 7639 - 7652 (2001)                                                                pdf                 

 

66.  “Elastic behavior of solution crosslinked poly(isobutylene) gels under large compression”

M.N. Ince, B. Erman, O. Okay, and S. Durmaz, Polymer 42, 3771-3777 (2001)                                         pdf                             

 

65.  “Reentrant phase transition of strong polyelectrolyte poly(N-isopropylacrylamide) gels in PEG solutions”

D. Melekaslan, and O. Okay, Macromol. Chem. Phys. 202,304 - 312 (2001)                               pdf

 

64.  “Superabsorbent materials based on butyl rubber: Process for making said materials and use of them”

B. Erman, O. Okay, and S. Durmaz,

International Patent, Patent Number WO0148042 A1, AU2470800, Publication Date: 2001-07-05               pdf

 

63.  “In situ photon transmission technique for monitoring phase separation in real time during gelation”

S. Kara, O. Okay, and O. Pekcan, Polymer Bull. 45, 281-285 (2000)                                                                                                  pdf  

 

62.  “The effect of preparation temperature on the swelling behavior of poly(N-isopropylacrylamide) gels”

C. Sayil, and O. Okay, Polymer Bull. 45, 175-182 (2000)                                                                                                                           pdf          

 

61.  “Swelling of strong polyelectrolyte hydrogels in polymer solutions: Effect of ion pair formation on the polymer collapse”

D. Melekaslan, and O. Okay, Polymer 41, 5737-5747 (2000)                                                                                                                              pdf                

 

60.  “Macroporous Copolymer Networks”

O. Okay, Progress in Polymer Science 25, 711-779 (2000)                                                                                                                             pdf

 

59.  “Solution crosslinked poly(isobutylene) gels: synthesis and swelling behavior”

O. Okay, S. Durmaz, and B. Erman, Macromolecules 33, 4822-4827 (2000)                                                                                               pdf        

 

58.  “Acrylamide / 2-acrylamido- 2- methyl propane sulfonic acid sodium salt -based hydrogels: Synthesis and characterization”

S. Durmaz, and O. Okay, Polymer 41, 3693-3704 (2000)                                                                                pdf                         

 

57.  “Gel growth in free-radical crosslinking copolymerization: Effect of inactive gel radicals”

O. Okay, Macromol. Theory Simul. 9, 354-361 (2000)                                                                                 pdf      

 

56.  “Phase separation during the formation of poly(acrylamide) hydrogels”

S. Durmaz, and O. Okay, Polymer 41, 5729-5735 (2000)                                                                             pdf        

 

55.  “Swelling Behavior of Poly(acrylamide-co-sodium acrylate) Hydrogels in Aqueous Salt Solutions: Theory versus Experiments”

O. Okay, and S.B. Sariisik, Eur. Polym. J. 36, 393-399 (2000)                                                                                              pdf                

 

54.  “Heterogeneities during the formation of poly(sodium acrylate) hydrogels”

O. Okay, Y. Yilmaz, D. Kaya, M. Keskinel, and O. Pekcan, Polymer Bull. 43, 425-431 (1999)                                                  pdf                          

 

53.  “Observation of critical opalescence in free radical crosslinking copolymerization of styrene and divinylbenzene by fluorescence method”

O. Pekcan, D. Kaya, and O. Okay, Eur. Polym. J. 35, 2025-2029 (1999)                                                                                              pdf       

 

52.  “Formation of Macroporous Styrene - Divinylbenzene Copolymer Networks: Theory versus Experiments”

O. Okay, J. Appl. Polym. Sci. 74, 2181-2195 (1999)                                                                                    pdf

 

51.  “Free-radical Crosslinking Copolymerization of Styrene and Divinylbenzene: Real Time Monitoring of the Gel Effect Using Fluorescence Probe”

O. Okay, D. Kaya, and O. Pekcan, Polymer 40, 6179-6187 (1999)                                                              pdf            

 

50.  “Phase Separation in Free-Radical Crosslinking Copolymerization: Formation of Heterogeneous  Polymer Networks”

O. Okay, Polymer 40, 4117-4129 (1999)                                                                                        pdf                         

 

49.  “Pore memory of Macroporous Styrene -Divinylbenzene Copolymer Beads”

E. Erbay, and O. Okay, J. Appl. Polym. Sci. 71, 1055-1062 (1999)                                              pdf      

 

48.  “Macroporous Styrene - Divinylbenzene Copolymers: Formation of Stable Porous Structures during the Copolymerization”

E. Erbay, and O. Okay, Polymer Bull. 41, 379-385 (1998)                                                            pdf           

 

47.  “Swelling Behavior of Anionic Acrylamide-based Hydrogels in Aqueous Salt Solutions: Comparison of Experiment with Theory”

O. Okay, S.B. Sariisik, and S.D. Zor, J. Appl. Polym. Sci. 70, 567-575 (1998)                            pdf              

 

46.  “Heterogeneities in polyacrylamide gels immersed in acetone- water mixtures”

O. Okay, and U. Akkan, Polymer Bull. 41, 363-370 (1998)                                                           pdf                

 

45.  “Swelling of polyacrylamide gels in polyacrylamide solutions”

N. Kayaman, O. Okay, and B.M. Baysal, J. Polym. Sci., Polym. Phys. Ed., 36, 1313-1320 (1998)                                 pdf

 

44.  “Effects of Cyclization and Electrostatic Interactions on the Termination Rate of Macroradicals in Free-Radical Crosslinking Copolymerization”

M. Keskinel, and O. Okay, Polymer Bull. 40, 491- 498 (1998)                                      pdf

 

43.  “Microgels- intramolecularly crosslinked macromolecules with a globular structure”

W. Funke, O. Okay, and B. Joos-Muller, Advances in Polymer Science 136,139-234 (1998) pdf

 

42.  “Structure and protein separation efficiency of poly(N-isopropylacrylamide) gels: Effect of synthesis conditions”

N. Kayaman, D. Kazan, A. Erarslan, O. Okay, and B.M. Baysal, J. Appl. Polym. Sci. 67, 805-814 (1998).                                  pdf     

 

41.  "Phase transition of hydrolyzed polyacrylamide gels in PEG solutions"

N. Kayaman, O. Okay, and B.M. Baysal, Turk. J. Chem. 21, 346-352 (1997)                                              pdf

 

40.  “Effects of cyclization and pendant vinyl group reactivity on the swelling behavior of polyacrylamide gels”

O. Okay, N.K. Balimtas, and H.J. Naghash, Polymer Bull. 39, 233-239 (1997)                            pdf         

 

39.  “Swelling of polyacrylamide gels in aqueous solutions of ethylene glycol oligomers”

N. Kayaman, O. Okay, and B.M. Baysal, Polymer Gels and Networks 5, 339-356 (1997)                          pdf

 

38.  “Real time monitoring of polymerization rate of methyl methacrylate using fluorescence probe”

O. Pekcan, Y. Yilmaz, and O. Okay,   Polymer  38, 1693-1698 (1997)           pdf

 

37.  “Gel formation by chain crosslinking photopolymerization of methyl methacrylate and ethylene glycol dimethacrylate”

H.J. Naghash, O. Okay, and Y. Yagci, Polymer 38, 1187-1196 (1997)                          pdf          

 

36.  “Phase transition of polyacrylamide gels in PEG solutions”

N. Kayaman, O. Okay, and B.M. Baysal, Polymer Gels and Networks 5, 167-184 (1997)           pdf

 

35.  “Critical properties for gelation in free-radical crosslinking polymerization”

O. Okay, Turk. J. Phys. 20, 27-32 (1996)   

 

34.  “Determination of reaction activation energy during gelation in free-radical crosslinking copolymerization using the steady-state fluorescence method”

O. Pekcan, Y. Yilmaz, and O. Okay, J. Appl. Polym. Sci. 61, 2279-2284 (1996)                         pdf

 

33.  “Size distribution of polymers during the photoinitiated free-radical copolymerization of methyl methacrylate and ethylene glycol dimethacrylate”

H.J. Naghash, O. Okay, and Y. Yagci, Polymer Bull. 37, 207-213 (1996)                                                   pdf

 

32.  “Kinetics of emulsifier-free emulsion polymerization of methyl methacrylate”

T. Tanrisever, O. Okay, and I.C. Sonmezoglu, J. Appl. Polym. Sci. 61, 485-493 (1996)              pdf

 

31.  “In situ fluorescence experiments to test the reliability of random bond and site bond percolation models during sol-gel transition in free-radical crosslinking copolymerization”

O. Pekcan, Y. Yilmaz, and O. Okay, Polymer 37, 2049-2053 (1996)                             pdf

 

30.  “Formation and structure of polyacrylamide gels”

H.J. Naghash, and O. Okay, J. Appl. Polym. Sci. 60, 971-979 (1996)            pdf   

 

29.  “Biyolojik çözeltilerin konsantre edilmesi için sicakliga duyarli polimerik jel kürecikleri üretimi”

N. Kayaman, O. Okay, D. Kazan, A. Erarslan, and B.M. Baysal,

T. C. Patent No: TR9600295 B, (1996)

 

28.  “Effect of diluents on the porous structure of crosslinked polymethyl methacrylate beads”

Kucuk, A. Kuyulu, and O. Okay, Polymer Bull. 35, 511-516 (1995)              pdf

 

27.  “Critical properties for gelation in free-radical crosslinking copolymerization”

O. Okay, H.J. Naghash, and O. Pekcan, Macromol. Theory & Simul. 4, 967-981 (1995)                                                                                                                                           pdf     

26.  “Free radical crosslinking copolymerization. Effect of cyclization on diffusion-controlled termination at low conversion”

O. Okay, H.J. Naghash, and I. Capek, Polymer 36, 2413-2419 (1995)                                                                                                                                                                              pdf

 

25.  “Cyclization and Reduced Pendant Vinyl Group Reactivity during the Free-radical Crosslinking Polymerization of 1,4-Divinylbenzene”

O. Okay, M. Kurz, K. Lutz, and  W. Funke, Macromolecules 28, 2728 - 2737 (1995)                                                                                                                                              pdf   

 

24.  “Gel Formation in Free-radical Crosslinking Copolymerization”

H.J. Naghash, O. Okay, and H. Yildirim, J. Appl. Polym. Sci. 56, 477 - 483 (1995)                                                                                                                                                pdf         

 

23.  “Pendant Vinyl Group Reactivity during the Free-radical Copolymerization of Methyl Methacrylate and Ethylene Glycol Dimethacrylate”

O. Okay, and H.J. Naghash, Polymer Bull. 33, 665 - 672 (1994)                                                                                                                                                                           pdf

 

22.  “Fluorescence Technique to Study Sol-Gel Transition in the Free-radical Crosslinking Copolymerization of Methyl Methacrylate and Ethylene Glycol Dimethacrylate”

O. Pekcan, Y. Yilmaz, and O. Okay, Chem. Phys. Lett. 229, 537-540 (1994)                                                                                                                                               pdf

 

21.  “Kinetics of Gelation in Free-radical Crosslinking Copolymerization”

O. Okay, Polymer 35, 2613 - 2618 (1994)                                                              pdf

                                             

20.  “Gel Properties in Free-radical Crosslinking Copolymerization: A Kinetic Approach”

O. Okay, Makromol. Chem. Theory and Simul. 3, 417 - 427 (1994)                                                                                                                                                              pdf

 

19.  “Kinetic Modelling of Network Formation and Properties in Free-radical Copolymerization”

O. Okay, Polymer 35, 796 - 807 (1994)                                                            pdf

 

18.  “Intramolecularly Crosslinked Macromolecules - Formation and Structure, Characterization and Particle Properties”

W. Funke, H. Bauer, B. Joos, J. Kaczun, B. Kleiner, U. Leibelt, and O. Okay, Polymer International 30, 519 - 523 (1993)

 

17.  “Synthesis and Formation Mechanism of  Porous 2-Hydroxyethyl Methacrylate - Ethylene Glycol Dimethacrylate Copolymer Beads”

O. Okay, and C. Gurun, J. Appl. Polym. Sci. 46, 401-410 (1992)                                                                                                                                                                             pdf

 

16.  “Formation and Structural Characteristics of Porous Ethylene Glycol Dimethacrylate Networks”

O. Okay, and C. Gurun, J. Appl. Polym. Sci. 46, 421-434 (1992)                                                                                                                                                                             pdf

 

15.  “Steric Stabilization of Reactive Microgels from 1,4-Divinylbenzene”

O. Okay, and W. Funke, Makromol. Chem. Rapid Commun. 11, 583-587 (1990)                                                                                                                                                                 pdf

 

14.  “Conditions of Microgel Formation in the Anionic Polymerization of 1,4-Divinylbenzene”

O. Okay, and  W. Funke, Makromol. Chem. 191, 1565-1573 (1990)                                                                                                                                                                             pdf

 

13.  “Anionic Dispersion Polymerization of  1,4-Divinylbenzene”

O. Okay, and  W. Funke, Macromolecules 23, 2623-2628 (1990)                                                                                                                                                                                        pdf          

 

12.  “Formation and Structural Characteristics of Loosely Crosslinked Styrene-Divinylbenzene Networks”

O. Okay, Makromol. Chem. 189, 2201-2217 (1988)                                                                                                                                                                                                           pdf

 

11.  “Styrene-Divinylbenzene Copolymers VII. Stability of the Porous Structures Formed in Toluene-Cyclohexanol Mixtures”

O. Okay, Angew. Makromol. Chem. 157, 15-21 (1988)                                                                                                                                                                                                           pdf

 

10.  “Styrene-Divinylbenzene Copolymers VI.  Porosity Formation in the Presence of Toluene-Cyclohexanol Mixtures as Inert Diluents”

O. Okay, Angew. Makromol. Chem. 157, 1-13 (1988)                                                                                                                                                                                                           pdf

 

9.  “Styrene-Divinylbenzene Copolymers V.  Inhomogeneity in the Structure and Average Degree of Swelling”

O. Okay, Angew. Makromol. Chem. 153, 125-134 (1987)                                                                                                                                                                                            pdf

 

8.  “Porous Maleic Anhydride-Styrene-Divinylbenzene Copolymer Beads”

O. Okay, J. Appl. Polym. Sci. 34, 307-317 (1987)                                                                                                                                                                                                           pdf

 

7.  “Styrene-Divinylbenzene Copolymers IV.  Porosity Changes During Chloromethylation”

O. Okay, Angew. Makromol. Chem. 143, 209-214 (1986)                                                                                                                                                                                            pdf

 

6.  “Heterogeneous Styrene-Divinylbenzene Copolymers. Stability Conditions of the Porous Structures”

O. Okay, J. Appl. Polym. Sci. 32, 5533-5542 (1986)                                                                                                                                                                                                           pdf

 

5.  “Heterogeneous Styrene-Divinylbenzene Copolymers in Collapsed and Reexpanded States”

O. Okay, and T.I. Balkas, J. Appl. Polym. Sci. 31, 1785-1795 (1986)                                                                                                                                                                             pdf

 

4.  “Phase Separation in the Synthesis of Styrene-Divinylbenzene Copolymers with Di-2-ethylhexyl Phthalate as Diluent”

O. Okay, E. Soner, A. Gungor, and  T.I. Balkas, J. Appl. Polym. Sci. 30, 2065-2074 (1985)                                                                                                                                                              pdf  

 

3.  “Boron Pollution in the Simav River, Turkey and Various Methods of Boron Removal”

O. Okay, H. Guclu, E. Soner, and T.I. Balkas, Water Research 19, 857 - 862 (1985)                                                                                                                                                              pdf

 

2. “Stark basische Ionenaustauscher auf Guanidiniumsalz-Formaldehyd-Aceton-Basis”

O. Okay, and  H. Schindlbauer, Angew. Makromol. Chem. 127, 203-209 (1984)                                                                                                                                                                 pdf

 

1. “Wasserlösliche Kationisch Modifizierte Copolymere mit Acrylamid”

O. Okay, and H. Schindlbauer, Angew. Makromol. Chem. 122, 21-31 (1984)                                                                                                                                                                 pdf

 

 

BOOKS

 

2.  “Self-Healing and Self-Recovering Hydrogels”

C. Creton, O. Okay (eds.) Advances in Polymer Science 285, Springer,  2020.

 

1.  “Polymeric Cryogels: Macroporous Gels with Remarkable Properties”

O. Okay (ed.) Advances in Polymer Science 263, Springer, 2014.

 

 

BOOK CHAPTERS

 

3.  “General properties of hydrogels”

O. Okay, in G. Gerlach and K.-F. Arndt, eds., Hydrogel sensors and actuators, Springer Series on Chemical Sensors and Biosensors, Vol. 6, pp. , Springer, 2009.    pdf

 

2.  “Production of macroporous polymeric materials by phase separation polymerization”

O. Okay,  in B. Mattiasson, A. Kumar, and I. Y. Galaev, eds., Macroporous polymers: Production, properties and biotechnological/biomedical application, CRC Press, Taylor and Francis Group, Boca Raton, FL, 2009.

 

1.  “Macroporous hydrogels from smart polymers”,

O. Okay, in B. Mattiasson and I. Galaev, eds., Smart Polymers: Production, Study and Application in Biotechnology and Biomedicine, 2nd edition, pp. 269-299, CRC Press, Taylor and Francis, Boca Raton, FL, 2007.

 

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 PATENTS          

 

6.  Hexadecyl acrylate–based photo-curable resins for 4D printing of body temperature responsive hydrogels with shape-memory and self-healing properties.

Inventors: T. Abdullah, G. Aydin, O. Okay. Applicant: Istanbul Technical University. Publ. No WO/2024/263142, Publ. Date 26.12.2024, International Appl. No. PCT/TR2024/050687, International Filing Date 4.06.2024     pdf

 

5.  "Production of self-healable and shape memory butyl rubber” (Kendi kendini onarabilen ve şekil hafızalı butil kauçuk üretimi)

O. Okay, C. Bilici, 

T. C. Patent Basvurusu, 18/06/2019 (2019)

 

4.  "Production of macroporous reusable rubber sorbent for removal organic pollutants from water” (Organik kirleticilerin sulardan uzaklaştırılması için makrogözenekli, tekrar kullanılabilir kauçuk sorbent üretimi)

O. Okay, I. Karakutuk, D. Ceylan, O.S. Okay, 

T. C. Patent, TR200909456 (2009)

 

3.  “Preparation of novel macroporous sorbents and use of them for the removal of oil spills from surface waters” (Petrol döküntülerinin yüzey sularından uzaklaştırılması için yeni bir makrogözenekli sorbent üretimi ve uygulaması)

O. Okay, and D. Ceylan,  

T. C. Patent, TR20070001790 20070321 (2007)

 

2.  “Biyolojik çözeltilerin konsantre edilmesi için sicakliga duyarli polimerik jel kürecikleri üretimi”

N. Kayaman, O. Okay, D. Kazan, A. Erarslan, and B.M. Baysal,

T. C. Patent No: TR9600295 B, (1996)

 

1.  “Superabsorbent materials based on butyl rubber: Process for making said materials and use of them”

B. Erman, O. Okay, and S. Durmaz,

International Patent, Patent Number WO0148042 A1, AU2470800, Publication Date: 2001-07-05

 

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OTHER PUBLICATIONS

 

12.  A.M. C. Şengör, N. Görür, O. Okay,  Türkiye Jeolojisinin Büyük Kaybı: Prof. Dr. Aral Okay (1953-2023). HBT, Sayı 418, 18.04.2024.        pdf

 

11.  Okay, O., Kimya Bölümlerinin bilimsel başarısı,  makale

Cumhuriyet Bilim Teknik, Sayı 1050 (4.05.2007).

 

10.  Okay, O., Olgun, H., Karakoc, F., Ayar, R., Okay, D., 21-23/04/2001 Hasandağı Tırmanışı

MAM Gündem, Sayı 35, Mayıs-Haziran 2001, Sayfa 9-11 (GEZİ)

 

9.  Kaya, D., Okay, O., Pekcan, Ö., Real Time Monitoring of the Gel Effect in Free-Radical Crosslinking Copolymerization of Styrene and Divinylbenzene Using Fluorescence Probe

Turkish Journal of Physics 23, 179 (1999)

 

8.  Pekcan, Ö., Yilmaz, Y., Okay, O., Fluorescence technique for studying the sol-gel transition in free-radical crosslinking copolymerization of methyl methacrylate and ethylene glycol dimethacrylate, abstract,

Turkish Journal of Physics 20, 70 (1996)

 

7.  Okay, O., Teknoloji mi? Temel Arastirma mi?,  makale

 
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