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Abstract

LDPE in its unmodified form is not biodegradable. When it is compounded with additives or plasticizers, it is affected by microorganism in various degrees. Low Density Polyethylene film grade was compounded with butyl stearate, cottonseed oil, dioctyl phthalate, epoxidized soya bean oil, linseed oil, soya bean oil, groundnut oil and general-purpose polyester plasticizers. The amount of plasticizers was varied from 5–25% (w/w). The biodegradability was evaluated with respect to amount duration and type of plasticizer. The microbial susceptibility of various plasticizers was checked. Approximation of plasticizer concentration that exhibits highest susceptibility towards microbial attack was determined. The test method employed was screening of biodegradation of specimen under agitation.

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Biodegradable Low Density Polyethylene

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