Use of DTA with infrared analysis of evolved gas to investigate the effect of flame retardants on gas evolution from pyrolysed cellulose (cotton)

Price, Dennis, Horrocks, Richard ORCID: 0000-0003-1431-058X and Akalin, M. (1988) Use of DTA with infrared analysis of evolved gas to investigate the effect of flame retardants on gas evolution from pyrolysed cellulose (cotton). British Polymer Journal, 20 (1). pp. 61-67. ISSN 1934-256X

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Official URL: https://onlinelibrary.wiley.com/toc/1934256x/1988/...

Abstract

DTA combined with infrared analysis of the evolved gas (EGA) has been used to study the temperature behaviour, both in air and nitrogen, of commercial phosphorus‐ and nitrogen‐ and/or bromine‐containing flame retardants applied to cotton. By reference to the DTA traces and also the maxima occurring in the CO, CO2 and H2O evolution rates, seven significant peak temperatures were assigned. Two new relatively low temperature peaks have been observed: the higher of these is DTA‐sensitive and occurs in all unretarded and retarded samples and is ascribed to the formation of an ‘activated cellulose’ state previously proposed by Bradbury, Sakai and Shafizadeh; the lower peak is an exotherm (188‐220°C) associated with H2O and CO2 evolution from flame‐retarded samples only. These observations are interpreted in terms of the mechanism of the cellulose pyrolysis/combustion and the influence of the flame retardants.

Item Type: Article
Additional Information: Presented at the joint meeting of the RSC Thermal Methods Group and the RSC/SCI Macro Group on ‘Applications of Thermal Methods to Polymers’, Loughborough, UK, January 1987
Divisions: University of Bolton Research Centres > Institute for Materials Research and Innovation
Depositing User: Tracey Gill
Date Deposited: 17 Aug 2018 10:04
Last Modified: 17 Aug 2018 10:04
Identification Number: 10.1002/pi.4980200112
URI: http://ubir.bolton.ac.uk/id/eprint/1871

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