Accession Number:

ADA281402

Title:

Synthesis and Mesomorphic Behavior of Poly((2S, 3S)-(+)-2-Chloro-3- Methylpentyl 4'-(Omega-Vinyloxyalkyloxy)biphenyl-4-Carboxylate)s with Ethyl and Propyl Alkyl Groups

Descriptive Note:

Technical rept.

Corporate Author:

CASE WESTERN RESERVE UNIV CLEVELAND OH DEPT OF MACROMOLECULAR SCIENCE

Personal Author(s):

Report Date:

1994-06-30

Pagination or Media Count:

11.0

Abstract:

The synthesis and cationic polymerization of 2S, 3S--2-chloro-3- methylpentyl 4-2-vinyloxyethyloxybiphenyl-4-carboxylate 15-2 and 2S, 3S- -2-chloro-3-methylpentyl 4-3-vinyloxyethyloxybiphenyl-4-carboylate 15-3 are described. The mesogenic behavior of the resulting polymers is discussed as a function of the molecular weight and spacer length. Based on the second and subsequent heating and cooling scans, poly15-2s exhibit an enantiotropic Sx unidentified smectic phase. Poly 15-3s show an enantiotropic cholesteric phase and an inverse monotropic Sx phase.

Subject Categories:

  • Organic Chemistry
  • Physical Chemistry
  • Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE