Graft copolymerization of methyl methacrylate onto gelatin using KMnO4-H2SO4 redox system

Keles H., Sacak M.

JOURNAL OF APPLIED POLYMER SCIENCE, vol.89, no.10, pp.2836-2844, 2003 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 89 Issue: 10
  • Publication Date: 2003
  • Doi Number: 10.1002/app.12482
  • Journal Name: JOURNAL OF APPLIED POLYMER SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2836-2844
  • Keywords: copolymerization, graft copolymer, density, BENZOYL-PEROXIDE, POLY(ETHYLENE-TEREPHTHALATE) FIBERS, ETHYL ACRYLATE, AQUEOUS-MEDIUM, POLYMERIZATION, ACID, ACRYLONITRILE, PROTEIN, STARCH
  • Ankara University Affiliated: No

Abstract

The graft copolymerization of methyl methacrylate onto gelatin was studied using KMnO4-H2SO4 redox system. The maximum graft yield of 64.5% was obtained at the potassium permanganate concentration of 2.00 X 10(-3) mol/L and the optimum temperature of 50degreesC. Activation energy was calculated as 18.6 kcal/mol at the temperature interval of 40-70degreesC. The results of the thermogravimetric analysis showed that the degradation temperature of gelatin increased as a result of grafting. Moreover, some changes in the properties of methyl methacrylate-grafted samples were also observed. (C) 2003 Wiley Periodicals, Inc.