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Degradation studies of polyurethanes based on vegetable oils. Part 1. Photodegradation

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Mohd Rus, Anika Z., Kemp, T. J. and Clark, Andrew J. (2008) Degradation studies of polyurethanes based on vegetable oils. Part 1. Photodegradation. Progress in Reaction Kinetics and Mechanism, Vol.33 (No.4). pp. 363-391. doi:10.3184/146867808X377140

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Official URL: http://dx.doi.org/10.3184/146867808X377140

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Abstract

UV-induced photodegradation has been studied of films of polyurethanes synthesised from (renewable) vegetable materials, namely rapeseed and sunflower oils. The techniques utilised were principally IR and UV-visible spectroscopy. UV(B)-photolysis of the cured films gave rise to IR bands in the carbonyl region at ca 1706 cm(-1) and a UV band at 310 mn attributed to formation of a quinone methide, an assignment supported by the development of new IR bands at 1595, 1650, and 1695 cm(-1) which are typical of this chromophore. In addition, intensification of a band at 1171 cm(-1) is attributed to cross-linking of the soft segments in the polymer.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
T Technology > TP Chemical technology
Divisions: Faculty of Science, Engineering and Medicine > Science > Chemistry
Library of Congress Subject Headings (LCSH): Photodegradation, Vegetable oils, Triglycerides, Polymers -- Deterioration
Journal or Publication Title: Progress in Reaction Kinetics and Mechanism
Publisher: Science Reviews 2000 Ltd
ISSN: 1468-6783
Official Date: 2008
Dates:
DateEvent
2008Published
Volume: Vol.33
Number: No.4
Number of Pages: 29
Page Range: pp. 363-391
DOI: 10.3184/146867808X377140
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: Universiti Tun Hussein Onn Malaysia (UTHM), Malaysian Government
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