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The effect of dyes on photo-induced chemiluminescence emission from polymers

Millington, Keith R., Zhang, Hu, Jones, Michael J. and Wang, Xungai 2010, The effect of dyes on photo-induced chemiluminescence emission from polymers, Polymer degradation and stability, vol. 95, no. 1, pp. 34-42.


Title The effect of dyes on photo-induced chemiluminescence emission from polymers
Author(s) Millington, Keith R.
Zhang, Hu
Jones, Michael J.
Wang, Xungai
Journal name Polymer degradation and stability
Volume number 95
Issue number 1
Start page 34
End page 42
Publisher Elsevier
Place of publication London, England
Publication date 2010-01
ISSN 0141-3910
1873-2321
Keyword(s) chemiluminescence
protein
cellulose
dyes
photoreduction
Summary Weak photo-induced chemiluminescence (PICL) emission is observed when polymers are exposed to UVA or visible light. The presence of dyes can either increase PICL intensity via Type I photosensitisation which generates polymer free radicals, or reduce it via photo-protection. PICL studies on the eight Blue Wool Standards (BWSs) that are used commercially as lightfastness standards show higher PICL intensity from the least photostable BWSs that use triphenylmethane dyes and lower intensity from more photostable BWSs using UVA and visible wavelengths. The relative PICL intensities do not correlate in a stepwise manner with lightfastness ratings of the BWSs. However dye/polymer combinations that emit high levels of PICL relative to the undyed material are unlikely to have acceptable lightfastness. The xanthene dyes fluorescein and eosin Y are more strongly photosensitising than triphenylmethane dyes on wool and both produce higher PICL emission than undyed wool when irradiated with visible light.
Language eng
Field of Research 091299 Materials Engineering not elsewhere classified
Socio Economic Objective 869999 Manufacturing not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2009, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30021485

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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Created: Wed, 06 Jan 2010, 15:04:19 EST by Christine Rimmer