"Telechelic" Ferroelectric Fluoro Terpolymers With High Chemical Reactivity and Large Electromechanical Response at Ambient Temperature

Abstract

This paper discusses a new family of telechelic ferroelectric polymorphs fluoroterpolymers having OH and COOH terminal groups. The polymer backbone comprises of vinylidene difluoride (VDF), trifluoroethylene (TrFE), and a small amount of chlorinecontaining third monomers. The slightly bulky chlorine atoms serve as the kinks, which alters the chain conformation from all-trans (Beta-phase) to tttg+tttg- (gamma -phase), without reducing crystallinity. Consequently, the terpolymers exhibit low Curie temperature, high dielectric constant (>80) and large electrostrictive response (>5%) at ambient temperature. On the other hand, the reactive terminal groups provide the terpolymers chemical reactivity to form super-structures that may further enhance their electric performance.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2003
Accession Number
ADA429645

Entities

People

  • A. Petchsuk
  • TC Mike Chung

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Biomedical And Dental Materials
  • Block Copolymers
  • Chemical Shifts
  • Chemistry
  • Copolymers
  • Dielectric Permittivity
  • Electric Fields
  • Electrical Properties
  • Fluoropolymers
  • Free Radicals
  • Materials
  • Materials Science
  • Mechanical Properties
  • Molecular Weight
  • Phase Transformations
  • Polymers
  • Transition Temperature

Fields of Study

  • Chemistry

Readers

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

Technology Areas

  • Microelectronics