Smoke-suppression in plasticised chlorinated poly(vinyl chloride) (CPVC)

Carty, Peter, White, Stewart, Price, Dennis and Lu, Lucy (1999) Smoke-suppression in plasticised chlorinated poly(vinyl chloride) (CPVC). Polymer Degradation and Stability, 63 (3). pp. 465-468. ISSN 0141-3910

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A study has been carried out on the pyrolysis (in air) of plasticised chlorinated poly(vinyl chloride) (CPVC) using pyrolysis/gas chromatography/mass spectroscopy. CPVC plasticised with dioctyl phthalate (DOP) containing modest amounts of the smoke-suppressant, basic iron(iii) oxide (FeOOH), produces small amounts of smoke when it is forced to burn in the air. It has been shown that the activity of the smoke-suppressing compound in this polymer system changes the decomposition path of the phthalate plasticiser. In the absence of the smoke-suppressant, the major decomposition products are hydrogen chloride, benzene and a chlorinated hydrocarbon. When small amounts of the iron compound are incorporated into the polymer no benzene was detected amongst the decomposition products, only hydrogen chloride, phthalic anhydride (the major product) and the same chlorinated hydrocarbon were found. Hence the major source of smoke in this system (benzene) has been essentially removed by the chemical action of the smoke-suppressant. A scheme showing how the iron compound reacts with the polymer and plasticiser is proposed

Item Type: Article
Additional Information: Full text of this article is not available in this repository. This article was originally published in Polymer degradtion and stability, published by and copyright Elsevier.
Divisions: University of Bolton Research Centres > Institute for Materials Research and Innovation
Depositing User: Scott Wilson
Date Deposited: 26 Nov 2013 12:52
Last Modified: 06 Jan 2014 12:21
Identification Number: 10.1016/S0141-3910(98)00075-5

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