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Electro-Mechanical Properties of Electron Irradiated P(VDF-TrFE) Copolymers Under Different Mechanical Stresses

Published online by Cambridge University Press:  10 February 2011

Z.-Y. Cheng ,
S. J. Gross ,
V. Bharti ,
T.-B. Xu ,
T. Mai  and
Q. M. Zhang
Z.-Y. Cheng
Affiliation:
Materials Research Laboratory, The Pennsylvania State University University Park, PA 16802
S. J. Gross
Affiliation:
Materials Research Laboratory, The Pennsylvania State University University Park, PA 16802
V. Bharti
Affiliation:
Materials Research Laboratory, The Pennsylvania State University University Park, PA 16802
T.-B. Xu
Affiliation:
Materials Research Laboratory, The Pennsylvania State University University Park, PA 16802
T. Mai
Affiliation:
Materials Research Laboratory, The Pennsylvania State University University Park, PA 16802
Q. M. Zhang
Affiliation:
Materials Research Laboratory, The Pennsylvania State University University Park, PA 16802
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Abstract

The electro-mechanical properties of high energy electron irradiated poly(vineylidene fluoride-trifluorethylene) (P(VF-TrFE)) copolymers under different mechanical stress conditions are reported. In stress free condition, the electric field induced longitudinal and transverse strains of the irradiated P(VDF-TrFE) copolymer films at room temperature (RT) can reach about 5% and more than 3% respectively. The longitudinal strain response of the material under hydrostatic a pressure up to 83 atmospheses was studied at RT. The transverse strain response of the material at RT was studied under uniaxial tensile stress. It was found that the material has a high load capability and for stretched films along the stretching direction the induced strain remains high, even at about 45 MPa. The temperature dependence of the strain response is also characterized. Both the temperature and stress dependence of the strain response indicate that the electric field induced strain response originates from the electric field induced local phase transition.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 600: Symposium FF – Electroactive Polymers , 1999 , 71
Copyright
Copyright © Materials Research Society 2000

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