Graft copolymerization of gelatin with poly(methyl methacrylate) in aqueous medium

✍ Scribed by Papia Roy; Anil Kumar

• Book ID: 104522957
• Publisher: Society for Plastic Engineers
• Year: 1991
• Tongue: English
• Weight: 612 KB
• Volume: 31
• Category: Article
• ISSN: 0032-3888
• DOI: 10.1002/pen.760311402

✦ Synopsis

Abstract

The grafting of poly(methyl methacrylate) onto gelatin in aqueous medium has been studied experimentally. The polymerization system is heterogeneous and the temperature and the initial concentration of gelatin charged in the reactor have been found to be extremely important. It is found that the amount of graft polymer increases rapidly and the formation of homopolymers is suppressed for large times. The predominantly graft polymer for the large times is essentially free from homopolymers and needs no separation. A theoretical model has been proposed which accounts for the heterogeneity in the reaction mass. The numerical solution of mass balance equations and its validation against experimental data suggests that graft copolymers react at the waterdroplet interphase at considerably higher rate.