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Kinetics of thermal degradation of vinyl polyperoxides in solution

De, Priyadarsi and Chattopadhyay, Sujay and Madras, Giridhar and Sathyanarayana, DN (2002) Kinetics of thermal degradation of vinyl polyperoxides in solution. In: Polymer Degradation and Stability, 76 (1). pp. 161-170.

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Official URL: http://dx.doi.org/10.1016/S0141-3910(02)00012-5

Abstract

The thermal degradation of vinyl polyperoxides, poly(styrene peroxide, (PSP), poly(alpha-methylstyrene peroxide) (PAMSP) and poly(alpha-phenylstyrene pet-oxide) (PAPSP), was carried out at different temperatures in toluene. The time evolution of molecular weight distributions (MWDs) was determined by gel permeation chromatography (GPC). A continuous distribution model was used to evaluate the random chain degradation rate coefficients. The activation energies, determined from the temperature dependence of the rate coefficients, suggest that thermal degradation of polyperoxides is controlled by the dissociation of the O-O bonds in the backbone of the polymer chain. Among the three polyperoxides investigated, the thermal stability is the highest for PAPSP and the lowest for PAMSP. (C) 2002 Elsevier Science Ltd. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Polyperoxides;Thermal degradation;Continuous distribution kinetics;Solution degradation
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Division of Mechanical Sciences > Chemical Engineering
Date Deposited: 19 Jul 2011 09:43
Last Modified: 19 Jul 2011 09:43
URI: http://eprints.iisc.ernet.in/id/eprint/39256

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