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Biodegradation of gelatin graft copolymers. IV
Author(s) -
Kumar G. Sudesh,
Kalpagam V.,
Nandi U. S.
Publication year - 1985
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.1985.070300303
Subject(s) - gelatin , biodegradation , serratia marcescens , nitrogen , incubation , copolymer , chemistry , bacillus subtilis , polymer , bacteria , nuclear chemistry , biology , organic chemistry , biochemistry , escherichia coli , gene , genetics
Gelatin graft copolymers of different compositions were tested for microbial susceptibility in a synthetic medium with pure cultures of Pseudomonas aeruginosa , Bacillus subtilis , and Serratia marcescens . The percent weight losses were recorded over 6 weeks of incubation period in nitrogen‐free and nitrogen‐rich media. The relationship between [log(rate)] during the first week of the test period and composition of the grafted samples showed a linear behavior. There was no difference in the aggressivity of these bacterial strains. Nitrogen analysis data and pH measurements of the media seem to reinforce our earlier observations. Soil burial tests also indicate degradation of polymer samples under natural weathering conditions. This article also summarizes the salient features of our series of investigations.