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Thermal and Electric Properties of P(VDF-TrFE) and P(VDF-CTFE) Copolymer Blends

Published online by Cambridge University Press:  01 February 2011

Zhimin Li ,
Yuhong Wang  and
Z.-Y Cheng
Zhimin Li
Affiliation:
Materials Research and Education Center, Auburn University, Auburn, AL36849, USA
Yuhong Wang
Affiliation:
Materials Research and Education Center, Auburn University, Auburn, AL36849, USA
Z.-Y Cheng
Affiliation:
Materials Research and Education Center, Auburn University, Auburn, AL36849, USA
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Abstract

PVDF-based electroactive polymers (EAP) exhibit high electromechanical performance that is attractive for developing high performance actuators and sensors. In an effort to develop very inexpensive electroactive polymers, P(VDF-TrFE)/P(VDF-CTFE) copolymer blends are studied and reported. The structure, morphology, thermal transition and miscibility of the blend system were investigated by DSC and X-ray diffraction. It is found that the phase transition behavior of the blends can be significantly modified using thermal and mechanical treatmentss. The modified film exhibits high polarization response and low remanent polarization. More importantly, a high electrostrictive strain of 5% was observed in the treated blends. Combined with Young's modulus, the results show that the copolymer blends have a electromechanical coupling factor and energy density comparable or even higher than the irradiated P(VDF-TrFE) copolymers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 856: Symposium BB – Multicomponent Polymer Systems-Phase Behavior, Dynamics, and Applications , 2004 , BB12.9
Copyright
Copyright © Materials Research Society 2005

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References

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