Thermally Stimulated Discharge Currents from Sodium Nitrate-Doped Polyacrylonitrile.

Abstract

Enhancement of charge capable of being stored in a polymer by direct incorporation of ions has been studied. The system chosen was polyacrylonitrile (PAN) into which had been dissolved either sodium nitrate, ammonium nitrate, or lithium chloride. Stored charge was measured by use of the Thermally Stimulated Discharge Current (TSDC) method. It was found, for example, that addition of 4 wt% salt could enhance stored charge by at least fifty-fold. The TSDC method also revealed that the stored charge arose from at least six identifiable contributions. The lower temperature contributions involved preferentially oriented dipoles, while the higher-temperature ones were caused by displaced real charges. No evidence for a strong interaction between dissolved ionic species and PAN chains at the repeat unit level was found, but density fluctuations on the supramolecular size-scale do appear to influence the stability of these stored real charges. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 03, 1980
Accession Number
ADA091638

Entities

People

  • H. Ueda
  • S. H. Carr

Organizations

  • Northwestern University

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Chemical Engineering
  • Chemical Reactions
  • Chemistry
  • Dielectric Permittivity
  • Dielectric Properties
  • Engineering
  • Heat Of Activation
  • Materials
  • Materials Laboratories
  • Materials Science
  • Military Research
  • Molecules
  • Polymeric Films
  • Polymers
  • Small Molecules
  • Space Charge
  • Transition Temperature

Readers

  • Combustion science or combustion engineering.
  • Plasma Physics.
  • Polymer Science and Engineering.