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Graft copolymerization of methyl methacrylate onto gelatin using KMnO 4 ‐H 2 SO 4 redox system
Author(s) -
Keleş Havva,
Saçak Mehmet
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.12482
Subject(s) - copolymer , potassium permanganate , thermogravimetric analysis , grafting , methyl methacrylate , redox , polymer chemistry , activation energy , gelatin , materials science , yield (engineering) , methacrylate , nuclear chemistry , chemistry , organic chemistry , polymer , composite material , metallurgy
Abstract The graft copolymerization of methyl methacrylate onto gelatin was studied using KMnO 4 ‐H 2 SO 4 redox system. The maximum graft yield of 64.5% was obtained at the potassium permanganate concentration of 2.00 × 10 −3 mol/L and the optimum temperature of 50°C. Activation energy was calculated as 18.6 kcal/mol at the temperature interval of 40–70°C. 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. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 2836–2844, 2003