Hierarchical Structure in Polymeric Solids and Its Influence on Properties.

Abstract

Work was centered on the family of mesogenic polyethers (synthetized, Professor Percec, Cleveland, USA) which appear to be the model substance for liquid crystal polymers to date in aid of the exploration of polymeric structure hierarchy. Notable advance was achieved along two directions. By embracing both lyotropic and thermotropic behaviour, coupled with crystallization from both states, and also from isotropic solution, the foundations were laid for a comprehensive investigation of generalized thermodynamic phase stability (phase diagram) and of the resulting morphologies with the ensuing structure hierarchy, to our knowledge for the first time in polymer science in its present completeness. On the fine scale end of the hierarchy molecular and layer arrangements were studies in the various mesogenic and crystallizing phases, utilising x-ray diffraction from specially prepared oriented systems.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1986
Accession Number
ADA193569

Entities

People

  • A. Keller

Organizations

  • University of Bristol

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Biomedical And Dental Materials
  • Copolymers
  • Crystallization
  • Crystals
  • Diffraction
  • Heat Energy
  • Heat Treatment
  • Liquid Crystals
  • Materials
  • Phase
  • Phase Diagrams
  • Phase Transformations
  • Polymers
  • Thermodynamics
  • Transitions
  • X Rays
  • X-Ray Diffraction

Readers

  • Materials Science and Engineering.
  • Polymer Science and Technology
  • Theoretical Analysis.