Accession Number : ADA183844

Title :   Liquid Crystalline Copoly(vinylether)s Containing 4(4')-Methoxy-4'(4)-Hydroxy-Alpha-Methylstilbene Constitutional Isomers as Side Groups.

Descriptive Note : Technical rept.,

Corporate Author : CASE WESTERN RESERVE UNIV CLEVELAND OH DEPT OF MACROMOLECULAR SCIENCE

Personal Author(s) : Percec,Virgil ; Tomazos,Dimitris

PDF Url : ADA183844

Report Date : Jan 1987

Pagination or Media Count : 12

Abstract : Ethoxy vinyl ethers containing 4-methoxy-4'-hydroxy-alpha-methylstilbene and 4-hydroxy-4'-methoxy-alpha-methylstilbene constitutional isomers as side groups were synthesized by phase transfer catalyzed etherification of a mixture containing the above mentioned isomers with 2-chloroethylvinyl ether. Cationic copolymerization of various ratios between the two constitutional isomeric monomers led to a mixture of two copolymers which were separated by fractional precipitation. One copolymer exhibits a nematic mesophase, the other exhibits two smectic mesophases.

Descriptors :   *COPOLYMERIZATION, *ETHERS, CATIONS, COPOLYMERS, MIXTURES, LIQUID CRYSTALS, TRANSFER, SYNTHESIS(CHEMISTRY)

Subject Categories : Organic Chemistry
      Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE