Biodegradation of gelatin-g-Poly(ethyl Acrylate) copolymers

Kumar, Sudesh G and Kalpagam, V and Nandi, US and Vasantharajan, VN (1981) Biodegradation of gelatin-g-Poly(ethyl Acrylate) copolymers. In: Journal of Applied Polymer Science, 26 . pp. 3633-3641.

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Abstract

Gelatin-g-poly(ethy1 acrylate) copolymers were prepared in an aqueous medium, using $K_{2}S_{2}0_{8}$ initiator. The composition of the graft copolymers was dependent upon temperature and duration of the reaction. The number of grafting sites was small and molecular weight of the grafted poly(ethy1 acrylate) branches was high. Three copolymer samples with grafting efficiencies of 33.3% 61.0%, and 84.0%, were tested for their microbial susceptibility in a synthetic medium employing a mixed inoculum of Bacillus subtilis, Pseudomonas aeruginosa, and Serratia marcexens and the percent weight losses were 12%, 10.1%, and 6.0%. respectively, after 6 weeks of incubation. The extent of degradation seems to decrease with increasing grafting efficiency. There was initial rapid weight loss accompanied by the exponential increase in bacterial population and pH of the culture medium during the first week. The nitrogen analysis also showed the utilization of the polymer. A parallel set of experiments, carried out by employing the samples as the only source of both carbon and nitrogen, showed a marginal but definite increase in the utilization of the polymer.

Item Type:	Journal Article
Publication:	Journal of Applied Polymer Science
Publisher:	John Wiley & Sons, Inc.
Additional Information:	The copyright belongs to John Wiley & Sons, Inc.
Keywords:	ethyl acrylate;gelatin;bacillus subtilis;pseudomonas aeruginosa;serratia marcescens;copolymers
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry Division of Biological Sciences > Microbiology & Cell Biology
Date Deposited:	25 Jul 2005
Last Modified:	03 Aug 2011 10:01
URI:	http://eprints.iisc.ac.in/id/eprint/3394

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