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Catalytic degradation of polybutadiene

Gupte, Sachin L and Madras, Giridhar (2004) Catalytic degradation of polybutadiene. In: Polymer Degradation and Stability, 86 (3). pp. 529-533.

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Abstract

The effect of Cobalt Fischere-Tropsch catalyst on the thermal degradation of cis-1,4 polybutadiene, polystyrene, chloride) and poly(vinyl acetate) in solution was investigated at various temperatures. The molecular weight distribution of the polymer was obtained by analyzing the samples by gel permeation chromatography. The catalyst enhanced the thermal degradation rate of polybutadiene in solution and had no e.ect on the thermal degradation of other polymers. However, the catalyst had no e.ect on the thermal degradation rate of polybutadiene in pyrolysis. Continuous distribution kinetics was used to evaluate the degradation rate coe.cients for the thermal and catalytic degradation of polymers in solution. The activation energies, calculated from the temperature dependence of rate coe.cients, were 130 kJ/mol and 108 kJ/mol for the thermal and catalytic degradation of polybutadiene in solution, respectively. The Friedman plot was used to determine the activation energy for the degradation of polybutadiene in pyrolysis.

Item Type: Journal Article
Additional Information: The copyright of this article belongs to Elsevier.
Keywords: Degradation;Catalysts;Gel permeation chromatography;Kinetics;Cobalt FischereTropsch catalyst;Polybutadiene;Pyrolysis
Department/Centre: Division of Mechanical Sciences > Chemical Engineering
Date Deposited: 09 Apr 2006
Last Modified: 19 Sep 2010 04:25
URI: http://eprints.iisc.ernet.in/id/eprint/6172

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