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

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.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1987
Accession Number
ADA183844

Entities

People

  • Dimitris Tomazos
  • Virgil Percec

Organizations

  • Case Western Reserve University

Tags

DTIC Thesaurus Topics

  • Alkenes
  • Chlorides
  • Copolymerization
  • Copolymers
  • Enthalpy Changes
  • Glass Transition Temperature
  • Isomers
  • Liquids
  • Materials
  • Military Research
  • Mixtures
  • Molecular Weight
  • Phase Transformations
  • Polymerization
  • Structural Isomers
  • Transition Temperature
  • Transitions

Fields of Study

  • Chemistry

Readers

  • Materials Science and Engineering.
  • Organic Chemistry
  • Polymer Science and Engineering.

Technology Areas

  • Microelectronics