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
Distribution Statement : APPROVED FOR PUBLIC RELEASE