Swelling behavior of thermoreversible poly(N-isopropylacrylamide-co-N-vinylimidazole) hydrogels
JOURNAL OF APPLIED POLYMER SCIENCE, cilt.94, sa.4, ss.1619-1624, 2004 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 94 Sayı: 4
- Basım Tarihi: 2004
- Doi Numarası: 10.1002/app.20915
- Dergi Adı: JOURNAL OF APPLIED POLYMER SCIENCE
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.1619-1624
- Hacettepe Üniversitesi Adresli: Hayır
Özet
Thermoresponsive hydrogels based on N-isopropylacrylamide and N-vinylimidazole were synthesized, and their swelling-deswelling behavior was studied as a function of the total monomer concentration. For copolymeric structures with better thermoresponsive properties with respect to poly(N-isopropylacrylamide-co-N-vinylimidazole) hydrogels, these hydrogels were protonated with HCl and HNO3, and the copolymer behaviors were compared with those of the unprotonated hydrogels. The temperature was changed from 4 to 70degreesC at fixed pHs and total ionic strengths. The equilibrium swelling ratio, dynamic swelling ratio, and dynamic deswelling ratio were evaluated for all the hydrogels. (C) 2004 Wiley Periodicals, Inc.