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Effect of benzoyl peroxide on the ultrasonic degradation of poly(vinyl acetate)

Madras, Giridhar and Chattopadhyay, Sujay (2001) Effect of benzoyl peroxide on the ultrasonic degradation of poly(vinyl acetate). In: Polymer Degradation and Stability, 73 (1). pp. 33-38.

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Abstract

The ultrasonic degradation of poly(vinyl acetate) was carried out in the presence of an oxidizing agent, benzoyl peroxide. The time evolution of the molecular weight distribution (MWDs) was determined by gel permeation chromatography. A mechanism based on radical reactions is proposed. The rate coefficients for these reactions were determined by analyzing the MWDs by continuous distribution kinetics. A stoichiometric kernel that accounts for preferential mid-point breakage of the polymer chains was used. The degradation rate coefficient of the polymer decreased with increasing benzoyl peroxide concentration, as predicted by the model.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: Sonochemistry;Degradation;Poly(vinyl acetate);Continuous distribution kinetics;Benzoyl peroxide
Department/Centre: Division of Mechanical Sciences > Chemical Engineering
Date Deposited: 02 Apr 2007
Last Modified: 19 Sep 2010 04:36
URI: http://eprints.iisc.ernet.in/id/eprint/10538

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