Molecular Engineering of Liquid Crystalline Polymers by Living Polymerization. 9. Living Cationic Polymerization of 5-((4-Cyano-4'-Biphenyl) oxy)pentyl Vinyl Ethers and 7-((4-Cyano-4'-Biphenyl)oxy)heptyl Vinyl Ether, and the Mesomorphic Behavior of the Resulting Polymers

Abstract

The synthesis and living cationic polymerization of 5-((4-cyano-4'- biphenyl)oxy)pentyl vinyl ether (6-5)and 7-((4-cyano-4'biphenyl)oxy)heptyl vinyl ether (6-7) are presented. The influence of molecular weight on the mesomorphic behavior of poly(6-5) and poly(6-7) is discussed and compared to that of 5-((4- cyano-4'-biphenyl)oxy)pentyl ethyl ether (8-5) and 7((4-cyano-4'-biphenyl)oxy) heptyl ethyl ether (8-7) which are models of the monomeric structural units of poly(6-5) and poly(6-7). Both (8-5) and (8-7) exhibit a monotropic nematic mesophase.

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Document Details

Document Type
Technical Report
Publication Date
Oct 16, 1990
Accession Number
ADA229769

Entities

People

  • C. Ackerman
  • Myongsoo Lee
  • Virgil Percec

Organizations

  • Case Western Reserve University

Tags

DTIC Thesaurus Topics

  • Alcohols
  • Alkanes
  • Alkenes
  • Chlorides
  • Chromatography
  • Column Chromatography
  • Crystal Structure
  • Ethers
  • Liquid Chromatography
  • Liquid Crystal Polymers
  • Magnesium Compounds
  • Military Research
  • Molecular Weight
  • Phase Transformations
  • Polymers
  • Silica Gels
  • Transition Temperature

Fields of Study

  • Chemistry

Readers

  • Polymer Science and Technology