Process for the Formation of Biaxially Oriented Films of Poly(p-Phenylene Terephthalamide) (PPD-T) from Liquid Crystalline Solutions.

Abstract

A new process for making equal biaxially oriented films from liquid crystalline solutions of poly (p-phenylene terephthalamide) (PPD-T) is described. The process involves extruding solutions of PPD-T/H2SO4 through an annular die and over an oil coated mandrel into a coagulation bath. The films were studied using wide angle X-ray diffraction (WAXS) and scanning electron microscopy (SEM). Tensile stress-strain properties were obtained on samples cut at various directions in the plane of the film. Biaxially oriented films were produced which possess equal properties in the various directions in the plane of the film.

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Document Details

Document Type
Technical Report
Publication Date
Nov 12, 1981
Accession Number
ADA108058

Entities

People

  • James L. White
  • John E. Flood
  • John F. Fellers

Organizations

  • University of Tennessee system

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Alcohols
  • Diffraction
  • Electron Microscopes
  • Electron Microscopy
  • Fibers
  • Films
  • Materials
  • Materials Processing
  • Materials Science
  • Measurement
  • Mechanical Properties
  • Microscopes
  • Microscopy
  • Modulus Of Elasticity
  • Polymers
  • Scanning Electron Microscopy
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Polymer Science and Technology
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene