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Enzymatic Degradation of Poly(D,L-lactide) and Its Blends with Poly(vinylacetate)

Mahalik, J P and Madras, Giridhar (2006) Enzymatic Degradation of Poly(D,L-lactide) and Its Blends with Poly(vinylacetate). In: Journal Of Applied Polymer Science, 101 (1). pp. 675-680.

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Abstract

The enzymatic degradation Of poly(D,L-lactide) (PLA) was investigated using two different lipases, Novozym 435 and Lipolase. The optimum temperature was 50 degrees C for the enzymatic degradation of PLA. The effect of various solvents on the degradation of PLA was investigated at 50 degrees C using Novozyrn 435, and toluene was found to be the best solvent among the solvents investigated. The enzymatic degradation of the blends of PLA and PVAc was investigated at 50 degrees C in toluene. The enzymatic degradation of the blends of PLA and PVAc showed that there is an interaction between the polymers during degradation, which results in the reduction of degradation rate of both polymers in the blend. A continuous distribution model was used to determine the rate coefficients for polymer degradation

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Wiley Periodicals, Inc.
Keywords: enzymatic degradation;poly(D,L-lactide);poly(vinyl acetate);continuous distribution kinetics;lipases.
Department/Centre: Division of Mechanical Sciences > Chemical Engineering
Date Deposited: 23 Mar 2009 10:07
Last Modified: 19 Sep 2010 04:55
URI: http://eprints.iisc.ernet.in/id/eprint/17154

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