Thermal degradation studies of para-substituted poly(styrene peroxide)s

De, Priyadarsi and Chattopadhyay, Sujay and Madras, Giridhar and Sathyanarayana, DN (2002) Thermal degradation studies of para-substituted poly(styrene peroxide)s. In: Polymer Degradation and Stability, 76 (3). 511-514 .

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Abstract

The thermal degradation of a series of para-substituted poly(styrene peroxide)s with electron-donating [CH3, C(CH3)(3)] and electron-attracting (Br) substitutents are investigated by thermogravimetric analysis (TGA). The results indicate that the Hammett relationship can describe quantitatively the trends in maximum rate of polymer decomposition (T-max) observed in TGA and thus thermostability of substituted poly(styrene peroxide)s depends only on the electronic nature of substituents and their ability to stabilize macroradicals formed during chain scission. The experimental results are also substantiated by thermochemical calculations. (C) 2002 Elsevier Science Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	Polymer Degradation and Stability
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	para-Substituted poly(styrene peroxide)s;Thermal degradation;Thermogravimetric analysis;Substituents effect; Hammett relationship
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry Division of Mechanical Sciences > Chemical Engineering
Date Deposited:	27 Jul 2011 07:45
Last Modified:	27 Jul 2011 07:45
URI:	http://eprints.iisc.ac.in/id/eprint/39491

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