Side-Chain Polyacrylates with 4-Dimethylamino-4'-Stilbenecarboxylic Ester Mesogens

Abstract

Omega-Acryloxyalkyl 4-dimethylamino-trans-stilbene-4'-carboxylates with (CH2)n spacer chains having n=2,4,6,8,and 10 have been synthesized and polymerized to give side chain liquid crystal polymers. DSC and polarizing microscopy show that the polymers have glass and isotropization transition temperatures that decrease with increasing length of the spacer chain to Tg=83C and Ti=125C for the (CH2)10 polymer. Low isotropization enthalpies of < or = 1.2 cal/g and polarizing microscopic textures indicate a low degree of order in the liquid crystals phases. The polymers are soluble, which indicates no significant cross-linking through the stilbene double bond, and the trans configuration of the stilbene was maintained throughout the syntheses.

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Document Details

Document Type
Technical Report
Publication Date
Sep 08, 1989
Accession Number
ADA213839

Entities

People

  • Mingyang Zhao
  • Warren T. Ford

Organizations

  • Oklahoma State University–Stillwater

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Alcohols
  • Alkanes
  • Chemical Synthesis
  • Chemistry
  • Crystallization
  • Crystals
  • Films
  • Glass Transition Temperature
  • Liquid Crystals
  • Military Research
  • Molecular Weight
  • Organic Chemistry
  • Phase Transformations
  • Polymeric Films
  • Polymers
  • Transition Temperature
  • Transitions

Fields of Study

  • Chemistry

Readers

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