SYNTHESIS, POLYMERIZATION AND STRUCTURAL CHARACTERIZATION OF A NOVEL LIQUID-CRYSTALLINE SIDE-CHAIN POLY(VINYL ETHER) CONTAINING DICYANOVINYL GROUPS AND DISPLAYING COEXISTING SMECTIC PHASES

Authors
TROLLSAS M IHRE H GEDDE UW HULT A
Citation
M. Trollsas et al., SYNTHESIS, POLYMERIZATION AND STRUCTURAL CHARACTERIZATION OF A NOVEL LIQUID-CRYSTALLINE SIDE-CHAIN POLY(VINYL ETHER) CONTAINING DICYANOVINYL GROUPS AND DISPLAYING COEXISTING SMECTIC PHASES, Macromolecular chemistry and physics, 197(3), 1996, pp. 767-779
Citations number
24
Categorie Soggetti
Polymer Sciences
Journal title
Macromolecular chemistry and physics → ACNP
ISSN journal
10221352
Volume
197
Issue
3
Year of publication
1996
Pages
767 - 779
Database
ISI
SICI code
1022-1352(1996)197:3<767:SPASCO>2.0.ZU;2-9
Abstract
The synthesis and cationic polymerization of the new monomer ,2-dicyan ovinyl)4'-(11-vinyloxyundecyloxy)biphenyl (6) is described. The dicyan ovinyl group tolerated thermally initiated and photoinitiated cationic bulk polymerization using onium salts as well as the BF3 (EtO)(2)-ini tiated solution polymerization in CH2Cl2 at - 15 degrees C. Monomer 6 was crystalline, whereas poly(6) with increasing temperature exhibited coexisting S(A)d and S-C phases, an S(A)d phase with extensive therma l stability and an isotropic phase. Poly(6) exhibited a glass transiti on at 20 degrees C.