Phase Transformations, Ultrastructure and Properties of Rigid-Rod Polymers

Abstract

The structure and properties of PBZT and PBO fibers and films depend critically in the detailed processing. Investigation of the coagulation process is of significant interest this is where the initial solid state polymer structure forms and the starting point from which all other post treatment microstructures evolve. Research under F49620-89-C-0073 has concerned an analysis of crystal solvates in a PBZT/PPA/water system, a general geometrical classification scheme for grain boundaries in PBZO, the analysis of compressive strength of PBZT/PEEK film laminates after sol-gel microcomposite processing, a morphological study of kink bands in PBZT and PBZO fibers to determine the cause of the relative weakness of the fibers in compression, and a microstructural examination of PBZO fibers as a function of heat treatment processing.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1991
Accession Number
ADA238643

Entities

People

  • Edwin L. Thomas

Organizations

  • University of Massachusetts Amherst

Tags

DTIC Thesaurus Topics

  • Chemical Engineering
  • Electron Diffraction
  • Electron Microscopy
  • Heat Energy
  • Heat Treatment
  • High Resolution
  • Materials
  • Materials Science
  • Mechanical Properties
  • Phase Transformations
  • Phosphoric Acids
  • Physical Properties
  • Rigid Rod Polymers
  • Rod Polymers
  • Scattering
  • Stresses
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Polymer Science and Technology
  • Reinforced Composite Materials
  • Theoretical Analysis.