SIDE-CHAIN LIQUID-CRYSTALLINE POLYURETHANES ON THE BASIS OF BIPHENYL MESOGENIC UNITS

Authors
MIRCEVA A OMAN N ZIGON M
Citation
A. Mirceva et al., SIDE-CHAIN LIQUID-CRYSTALLINE POLYURETHANES ON THE BASIS OF BIPHENYL MESOGENIC UNITS, Polymer bulletin, 40(4-5), 1998, pp. 469-476
Citations number
17
Categorie Soggetti
Polymer Sciences
Journal title
Polymer bulletin → ACNP
ISSN journal
01700839
Volume
40
Issue
4-5
Year of publication
1998
Pages
469 - 476
Database
ISI
SICI code
0170-0839(1998)40:4-5<469:SLPOTB>2.0.ZU;2-2
Abstract
Liquid crystalline diols containing a biphenyl mesogenic core, methoxy or cyano terminal groups and spacers of Various lengths were synthesi zed and used for the preparation of side-chain thermotropic polyuretha nes. The structure of the synthesized diols and polymers was confirmed by elemental analysis, FTIR and NMR spectroscopy. Phase transition te mperatures were studied by DSC, while optical textures were characteri zed by polarizing microscopy. A smectic type arrangement was found for the mesophases of all products.