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Effect of crystallinity and flexibilty on the photodegradation of polyurethanes

Book ID
120012487
Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
74 KB
Volume
17
Category
Article
ISSN
0306-3747

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Polyurethanes were synthesized from 4,4'-azobenzenediisocyanatc with mono-, di-, tri-and tetraethylene glycol and their thermal properties were investigated. One of the resulting polymers, poly(oxycarbonylimino-4,4'-azobenzene-diyliminocarbonyloxyethyleneoxyethyleneoxyeth~lene) shows a liquid crysta