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Electrostrictive Poly(vinylidene Fluoride-trifluoroethylene) Copolymers by Z.-Y Cheng; V Bharti; T.-B Xu; Haisheng Xu; T Mai; Q.M Zhang is a Engineering article available to read on EtoBox.

What is Electrostrictive Poly(vinylidene Fluoride-trifluoroethylene) Copolymers about?

High energy electron (1.0±2.55 MeV) irradiation was used to modify the phase transitional behavior of poly(vinylidene ̄uoride-tri ̄uoroethylene) (P(VDF-TrFE)) copolymers in an attempt to signi®cantly improve the electromechanical properties of the copolymers. It is found that the copolymers under a proper irradiation treatment exhibit very little room temperature polarization hysteresis and very large electrostrictive strain (the longitudinal strain of À5% can be achieved). Because of the large anisotropy in the strain responses along and perpendicular to the polymer chain, the transverse strain can be tuned over a broad range by varying the ®lm stretching condition. For unstretched ®lms, the magnitude of transverse strain is approximately about/less than 1/3 of that of the longitudinal strain, and for stretched ®lms, the transverse strain along the stretching direction is comparable to the longitudinal strain. In addition to the high strain response, the irradiated copolymers also possess high elastic energy density and mechanical load capability as indicated by the relatively high elastic modulus of the copolymer and the high strain response of the transverse strain even under 4

Who reads Electrostrictive Poly(vinylidene Fluoride-trifluoroethylene) Copolymers?

Author

Z.-Y Cheng; V Bharti; T.-B Xu; Haisheng Xu; T Mai; Q.M Zhang

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0924-4247)

Published

2001

Language

EN

Field

Engineering (Physical Sciences)