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Kinetics of the Enzymatic Degradation of Poly(vinyl acetate) in Solution

Chattopadhyay, Sujay and Madras, Giridhar (2003) Kinetics of the Enzymatic Degradation of Poly(vinyl acetate) in Solution. In: Journal of Applied Polymer Science, 89 (9). pp. 2579-2582.

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Abstract

The enzymatic degradability of poly(vinyl acetate) was investigated in toluene solutions at various temperatures with hog pancreas lipase. The polymer degraded by specific scission to yield oligomeric products with a molecular weight of 700. Continuous distribution kinetics were used to determine the rate coefficients. The variation of the rate coefficients with the temperature indicated an optimum at 55°C. The p-toluene sulfonic acid catalyzed degradation of poly(vinyl acetate) was also investigated. The degradation mechanism was random chain scission, and the energy of activation for degradation was determined from the variation of the rate coefficients with the temperature.

Item Type: Journal Article
Additional Information: The copyright belongs to Wiley Periodicals, Inc.
Keywords: degradation;enzymes;kinetics;polymers;high performance liquid chromatography;hplc
Department/Centre: Division of Mechanical Sciences > Chemical Engineering
Date Deposited: 14 Dec 2005
Last Modified: 19 Sep 2010 04:21
URI: http://eprints.iisc.ernet.in/id/eprint/4391

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