Spectroscopic and thermal studies of poly[(N-vinylimidazole)-co-(maleic acid)] hydrogel and its auaternized form

PEKEL BAYRAMGİL N., Guven O.

POLYMER INTERNATIONAL, vol.57, no.4, pp.637-643, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 57 Issue: 4
  • Publication Date: 2008
  • Doi Number: 10.1002/pi.2389
  • Journal Name: POLYMER INTERNATIONAL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.637-643
  • Hacettepe University Affiliated: Yes

Abstract

BACKGROUND: In this study, poly[ (N-vinylimidazole)-co-(maleic acid)] (poly(VIm/MA)) hydrogels were prepared by gamma-irradiation of ternary mixtures of N-vinyhmidazole-maleic acid-water using a Co-60 gamma-source. Spectroscopic and thermal analyses of these hydrogels as a function of protonation showed that the results are consistent with the existence of an H-bridged complex when the imidazole rings are partially protonated. Finally, the efficiency and binding trends of Cu2+, Co2+, Cd2+ and Pb2+ ions with both protonated and unprotonated poly(VIm/MA) hydrogels were determined.