Molecular Engineering of Side Chain Liquid Crystalline Polymers

Abstract

This chapter discusses the molecular engineering of side chain liquid crystalline polymers mainly by living polymerization reactions. According to thermodynamic schemes, the polymer effect through its molecular weight and backbone flexibility can provide an overall change of entropy of the system. Consequently it can transform virtual mesophases into monotropic and enantiotropic mesophases. The control of molecular weight provided by living cationic polymerization of mesogenic vinyl ethers can be used successfully to tailor-make phase transitions like smectic A (SA), nematic (n) and re-entrant nematic (nre) in side chain liquid crystalline polymers and copolymers. Some additional examples of molecular engineering of side chain liquid crystalline polymers containing crown ethers and polypodants and self-assemblying side Chain liquid crystalline polymers are presented.

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Document Details

Document Type
Technical Report
Publication Date
Mar 27, 1992
Accession Number
ADA248540

Entities

People

  • Dimitris Tomazos
  • Virgil Percec

Organizations

  • Case Western Reserve University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alkenes
  • Chemistry
  • Copolymers
  • Crown Ethers
  • Diagrams
  • Ethers
  • Liquid Crystals
  • Macromolecules
  • Molecular Physics
  • New York
  • Phase Diagrams
  • Phase Transformations
  • Polymers
  • Self Assembly
  • Systems Biology
  • Transition Temperature
  • Two Dimensional

Fields of Study

  • Chemistry

Readers

  • Polymer Science and Technology

Technology Areas

  • Microelectronics