Swelling behavior of thermoreversible poly(N-isopropylacrylamide-co-N-vinylimidazole) hydrogels

Isik B., Gunay Y.

JOURNAL OF APPLIED POLYMER SCIENCE, cilt.94, sa.4, ss.1619-1624, 2004 (SCI-Expanded) identifier identifier

  • 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.