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Proceedings Paper

X-ray diffraction study of a nematic-nematic transition in thermotropic liquid-crystalline polyurethanes
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Paper Abstract

An x-ray analysis of stretched oriented fibers of polyurethanes TDI-CmCn, derived from various mesogenic alkylene di[4-(w-hydroxyalkyloxy-4-oxybenzoyl)oxybenzoate]s (CmCn) and 2,4-toluenediisocyanate, is reported. The structure of two sequential nematic mesophases, a cybotactic nematic, and a conventional nematic mesophase is evidenced.

Paper Details

Date Published: 2 August 1995
PDF: 7 pages
Proc. SPIE 2372, Liquid Crystals: Materials Science and Applications, (2 August 1995); doi: 10.1117/12.215540
Show Author Affiliations
Oriano Francescangeli, Univ. di Ancona (Italy)

Published in SPIE Proceedings Vol. 2372:
Liquid Crystals: Materials Science and Applications
Jozef Zmija, Editor(s)

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