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Synthesis and Electric Property of VDF/TrFE/HFP Terpolymers

Published online by Cambridge University Press:  10 February 2011

A. Petchsuk  and
T. C. Chung
A. Petchsuk
Affiliation:
Department of Material Science and Engineering, The Pennsylvania State University, University Park, PA 16802
T. C. Chung
Affiliation:
Department of Material Science and Engineering, The Pennsylvania State University, University Park, PA 16802
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Abstract

This paper focuses on the molecular structure-electric property relationships of VDF/TrFE/HFP terpolymers, containing vinylidene difluoride (VDF), trifluoroethylene (TrFE) and hexafluoropropene (HFP) units. Several terpolymers were synthesized and evaluated with the corresponding VDF/TrFE copolymers. In general, a small amount of bulky HFP units in the polymer chain prevents the long sequence of crystallization and results in smaller ferroelectric (polar) micro-domains, which show the improved electric properties. The resulting terpolymer possesses a interesting combined properties with good processibility, low Curie transition temperature and high dielectric constant, narrow polarization hysteresis loop, and high strain response (2.5%) at relatively low electric field (50 MV/m).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 600: Symposium FF – Electroactive Polymers , 1999 , 53
Copyright
Copyright © Materials Research Society 2000

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