Liquid Crystalline Polymers Containing Heterocycloalkane Mesogens, Biphasic Side-Chain Liquid Crystalline Polysiloxanes Containing Trans 5-n-undecanyl-2-(4-cyanophenyl)-1,3-Dioxane Side Groups.

Abstract

Polysiloxanes and copolysiloxanes containing the trans 5-(n-undecanyl)-2-(4-cyanophenyl)-1,3-dioxane side group as mesogen were synthesized. Their phase behavior was studied by differential scanning calorimetry and optical polarization microscopy. Homopolymers containing the mesogen and a copolymer containing 33% of the mesogen showed smectic mesomorphism. The copolymers containing the mesogen showed two well defined Tg and thus present strong evidence for a phase separated morphology.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1987
Accession Number
ADA183732

Entities

People

  • Chain S. Hsu
  • Virgil Percec

Organizations

  • Case Western Reserve University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Alcohols
  • Chlorides
  • Classification
  • Copolymers
  • Crystallization
  • Ethers
  • Glass Transition Temperature
  • Military Research
  • Mixtures
  • Molecular Weight
  • Organic Compounds
  • Phase
  • Phase Separation
  • Phase Transformations
  • Polymers
  • Security
  • Transition Temperature

Fields of Study

  • Chemistry

Readers

  • Chemistry (specifically Chemical Fluorescence)
  • Materials Science and Engineering.
  • Nanocomposite Materials Science

Technology Areas

  • Microelectronics