Photoluminescent properties of flexible PVC compounds and their interpretation for performance analysis of automotive exterior parts

Kann, Yelena and Billingham, Norman C (2003) Photoluminescent properties of flexible PVC compounds and their interpretation for performance analysis of automotive exterior parts. Journal of Vinyl & Additive Technology, 9 (1). pp. 12-18.

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Abstract

Study of fluorescence emission from flexible WC-based formulations, colored by
exposure to road asphalt or degraded thermally or by W aging, shows that fluores-
cent species are formed during the interaction of PVC with road asphalt. For the
conditions found in exterior automotive applications, n o other known degradation
causes development of fluorescence. Flexible PVC-based formulations discolored by
asphalt staining or degraded thermally a t moderate temperatures bleach completely
under conditions of natural or artificial weathering. A simple technique, using visu-
ally observed photoluminescence and photobleaching, c a n thus identify photoactive
groups formed during the interaction of PVC with road asphalt. Application of this
test method will allow selective improvement of failed asphalt resistance without
treating the "overall" stability of a compound.

Item Type: Article
Schools and Departments: School of Life Sciences > Chemistry
Depositing User: Norman Billingham
Date Deposited: 06 Feb 2012 20:36
Last Modified: 28 Mar 2012 08:36
URI: http://sro.sussex.ac.uk/id/eprint/26946
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