Synthesis and Physical Properties of Liquid Crystalline Alkylisocyanate Copolymers

Abstract

Liquid crystalline copolymer containing 50:50 mole ratios of undecylisocyanate with propyl, butyl, hexyl, and octylisocyanate were synthesized and characterized. By making copolymers, the temperature range of isotropic state (i.e. range between the clearing and decomposition temperatures) was increased over that for poly (undecylisocyanate). The results from various analyses showed that all the copolymers undergo decomposition at 180 C. The dependence of Tg on alkyl side chain length and copolymer composition was consistent with that for other alkyl-side-chain polymers. Liquid crystalline polymers.

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Document Details

Document Type
Technical Report
Publication Date
Jan 11, 1989
Accession Number
ADA203631

Entities

People

  • B. Durairaj
  • E. T. Samulski
  • M. T. Shaw

Organizations

  • University of Connecticut

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alkenes
  • Chemical Synthesis
  • Chemistry
  • Films
  • Glass Transition Temperature
  • Liquid Crystals
  • Materials
  • Materials Science
  • Military Research
  • Optical Analysis
  • Organic Chemistry
  • Physical Properties
  • Polymeric Films
  • Polymers
  • Sodium Compounds
  • Transition Temperature

Fields of Study

  • Chemistry

Readers

  • Materials Science and Engineering.
  • Organic Chemistry

Technology Areas

  • Microelectronics