The photostability of wool doped with photocatalytic titanium dioxide

Zhang, Hu, Millington, Keith R. and Wang, Xungai 2009, The photostability of wool doped with photocatalytic titanium dioxide, Polymer degradation and stability, vol. 94, no. 2, pp. 278-283.

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Title The photostability of wool doped with photocatalytic titanium dioxide
Author(s) Zhang, Hu
Millington, Keith R.
Wang, Xungai
Journal name Polymer degradation and stability
Volume number 94
Issue number 2
Start page 278
End page 283
Publisher Elsevier
Place of publication London, England
Publication date 2009
ISSN 0141-3910
1873-2321
Keyword(s) wool
photocatalysis
photoyellowing
titanium dioxide
nanoparticles
chemiluminescence
fibre science
Summary Photoyellowing of wool is a serious problem for the wool industry. This study assessed the role of photocatalytic nanocrystalline titanium dioxide (P-25) as a potential antagonist or catalyst in the photoyellowing of wool. Untreated, bleached and bleached and fluorescent-whitened wool slivers were processed into fine wool powders for the purpose of even and intimate mixing with the TiO2 nanoparticles in the solid state. Pure wool and wool/TiO2 mixtures were then compressed into solid discs for a photoyellowing study under simulated sunlight and under UVB and UVC radiations. Yellowness and photo-induced chemiluminescence (PICL) measurements showed that nanocrystalline TiO2 could effectively reduce the rate of photoyellowing by inhibiting free radical generation in doped wool, and that a higher concentration of TiO2 contributed to a lower rate of photooxidation and reduced photoyellowing. Hence nanocrystalline TiO2 acts primarily as a UV absorber on wool in dry conditions and not as a photocatalyst.
Language eng
Field of Research 091012 Textile Technology
Socio Economic Objective 869999 Manufacturing not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2008, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30021486

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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