Chemical and physical changes occurring in polyester polyurethane during biodegradation

摘要: An account of the biodegradation polyester polyurethane by a bacterium, tentatively identified as species Corynebacterium, is presented. This isolate reduced both tensile strength and percentage elongation at break test material within three days inoculation, in mineral salts medium supplemented with yeast extract. FTIR studies showed that degradation observed was due to hydrolysis ester linkages. Degradation not recorded, for any these parameters, where inoculated incubated presence mineral-salts glucose or sterile controls. Extracellular esterase activity detected cell-free supernatants However, addition did enhance viable cell number. It considered being utilised nutritional purposes degraded result co-metabolism.