Role of Mobile Ionic Species in Polymer Electrets.

Abstract

This paper is a preliminary, abridged review of current ideas regarding mobile ionic species in polymer electrets. The chief concept is that much of the persistent electrical polarization, developed in polymers prepared for piezo- or pyroelectric applications, is due to displaced ions. It is recognized that 1) preferential orientation of dipolar parts of the macromolecules (e.g., side groups) and 2) fluctuations in supermolecular order (including crystalline regions) lead to inhomogenieties in internal electrical fields which affect where such mobile ions become stabilized (trapped). Emphasis is placed on results obtained recently from research on polyacrylonitrile electrets. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 20, 1977
Accession Number
ADA035789

Entities

People

  • S. H. Carr

Organizations

  • Northwestern University

Tags

Communities of Interest

  • Advanced Electronics
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acrylonitrile Polymers
  • Biomedical And Dental Materials
  • Chemical Engineering
  • Chemical Reactions
  • Chemistry
  • Electrets
  • Engineering
  • Films
  • Materials
  • Materials Laboratories
  • Materials Science
  • Military Research
  • New Jersey
  • North Carolina
  • Plastics
  • Polymers
  • United States

Readers

  • Materials Science and Engineering.
  • Theoretical Analysis.