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Thermal degradation kinetics of vinyl polyperoxide copolymers

Sivalingam, G and Priyadarsi, De and Karthik, R and Madras, Giridhar (2004) Thermal degradation kinetics of vinyl polyperoxide copolymers. In: Polymer Degradation and Stability, 84 (1). pp. 173-179.

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Abstract

The thermal degradation of various vinyl polyperoxides (poly(styrene peroxide) [PSP], poly(methyl methacrylate peroxide) [PMMAP], poly(a-methyl styrene peroxide) [PAMSP]) and their binary copolyperoxides (PSP-PAMSP [SA], PSP-PMMAP [SM], PAMSP-PMMAP [AM]) were studied in a Thermogravimetric Analyzer (TGA). The thermal stability of the polyperoxides is in the order of PMMAP>SM>AM>SA>PSP>PAMSP. The addition of PAMSP to PSP showed a synergistic effect with higher thermal stability of the copolymer while the addition of PAMSP or PSP to PMMAP did not affect the thermal degradation of the copolymers. A method based on regression was proposed to determine the degradation parameters. The activation energies of degradation for the homopolyperoxides and copolyperoxides were determined by various methods and found in agreement with each other.

Item Type: Journal Article
Additional Information: The copyright belongs to Elsevier.
Keywords: Vinyl polyperoxides;Copolyperoxides;Activation energies;Rate coefficients;Linear regression method;Thermal degradation
Department/Centre: Division of Mechanical Sciences > Chemical Engineering
Date Deposited: 25 May 2006
Last Modified: 19 Sep 2010 04:27
URI: http://eprints.iisc.ernet.in/id/eprint/6814

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