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The co-pyrolysis of flame retarded high impact polystyrene and polyolefins

Hall, W.J., Bhaskar, T., Williams, P.T., Mitan, N., Muto, A. and Sakata, Y. (2007) The co-pyrolysis of flame retarded high impact polystyrene and polyolefins. Journal of Analytical and Applied Pyrolysis, 80 (2). pp. 406-415. ISSN 0165-2370

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The co-pyrolysis of brominated high impact polystyrene (Br-HIPS) with polyolefins using a fixed bed reactor has been investigated, in particular, the effect that different types brominated aryl compounds and antimony trioxide have on the pyrolysis products. The pyrolysis products were analysed using FT-IR, GC-FID, GC-MS, and GC-ECD. Liquid chromatography was used to separate the oils/waxes so that a more detailed analysis of the aliphatic, aromatic, and polar fractions could be carried out. It was found that interaction occurs between Br-HIPS and polyolefins during co-pyrolysis and that the presence of antimony trioxide influences the pyrolysis mass balance. Analysis of the Br-HIPS + polyolefin co-pyrolysis products showed that the presence of polyolefins led to an increase in the concentration of alkyl and vinyl mono-substituted benzene rings in the pyrolysis oil/wax resulting from Br-HIPS pyrolysis. The presence of Br-HIPS also had an impact on the oil/wax products of polyolefin pyrolysis, particularly on the polyethylene oil/wax composition which converted from being a mixture of 1-alkenes and n-alkanes to mostly n-alkanes. Antimony trioxide had very little impact on the polyolefin wax/oil composition but it did suppress the formation of styrene and alpha-methyl styrene and increase the formation of ethylbenzene and cumene during the pyrolysis of the Br-HIPS.

Item Type: Article
Copyright, Publisher and Additional Information: © 2007 Elsevier B.V. This is an author produced version of a paper published in Journal of Analytical and Applied Pyrolysis. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: pyrolysis, flame retardants, bromine, antimony, HIPS, polystyrene, polyolefins
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Engineering (Leeds) > School of Chemical & Process Engineering (Leeds) > Energy Research Institute (Leeds)
Depositing User: Dr William Hall
Date Deposited: 21 Feb 2008 15:35
Last Modified: 08 Feb 2013 17:05
Published Version: http://dx.doi.org/10.1016/j.jaap.2007.05.002
Status: Published
Publisher: Elsevier
Refereed: Yes
Identification Number: 10.1016/j.jaap.2007.05.002
URI: http://eprints.whiterose.ac.uk/id/eprint/3646

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