Dynamic mechanical and water sorption behaviour of ordered polyurethanes

Ordered polyurethanes were made from two diisocyanates (DI), mesogenic diol (D) and a polybutadiene diol (B) with stoichiometric ratios of reactive hydroxy and isocyanate groups. Two-(D/DI) and three-component ((D+B)/DI, D/B=1/1 by weight) polymers were prepared and their DSC, dynamic mechanical and...

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Bibliographic Details
Published in:Journal of non-crystalline solids 2002-09, Vol.307 (C), p.304-310
Main Authors: Valentová, H., Nedbal, J., Ilavský, M., Pissis, P.
Format: Article
Language:English
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Summary:Ordered polyurethanes were made from two diisocyanates (DI), mesogenic diol (D) and a polybutadiene diol (B) with stoichiometric ratios of reactive hydroxy and isocyanate groups. Two-(D/DI) and three-component ((D+B)/DI, D/B=1/1 by weight) polymers were prepared and their DSC, dynamic mechanical and water sorption behaviour was investigated. In two-component polymers nematic and smectic mesophases were found. Three-component systems exhibit two-phase structure with soft polybutadiene and hard polyurethane (formed from D and DI) phase; in the polyurethane phase, mesophases are formed.
ISSN:0022-3093
1873-4812
DOI:10.1016/S0022-3093(02)01482-5