Rigid Rod Molecules as Liquid Crystal Thermosets

Abstract

Rigid rod molecules endcapped with conventional crosslinking groups such as maleimide and nadimide were prepared and studied by differential scanning calorimetry and hot stage polarized light microscopy. Nematic liquid crystalline phases were identified in several of the new monomers. Thermally induced polymerization occurred in the nematic phase region and resulted in retention of the nematic texture in the final crosslinked solid. In many cases, isotropization was not observed at normal heating rates due to crosslinking and solidification in the nematic phase. Keywords: Liquid crystals.

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Document Details

Document Type
Technical Report
Publication Date
Jan 29, 1990
Accession Number
ADA217573

Entities

People

  • Andrea E. Hoyt
  • Brian Benicewicz
  • Samuel J. Huang

Organizations

  • University of Connecticut

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Anhydrides
  • Calorimetry
  • Chemical Synthesis
  • Chemistry
  • Department Of Defense
  • Engineering
  • Liquid Crystal Polymers
  • Liquid Crystals
  • Macromolecules
  • Materials
  • Materials Science
  • Melting Point
  • Microscopy
  • Military Research
  • Polymers
  • United States
  • United States Government

Readers

  • Materials Science and Engineering.
  • Polymer Science and Technology