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Enhanced Electrocaloric Effect in Poly(vinylidene fluoride-trifluoroethylene)-based Composites

Published online by Cambridge University Press:  25 January 2013

Xiang-Zhong Chen
Affiliation:
Materials Research Institute and Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802, USA Department of Polymer Science & Engineering and Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry & Chemical Engineering Nanjing University, Nanjing, 210093, China
Xiao-Shi Qian
Affiliation:
Materials Research Institute and Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
Xinyu Li
Affiliation:
Materials Research Institute and Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
David Sheng-Guo Lu
Affiliation:
Materials Research Institute and Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
Haiming Gu
Affiliation:
Materials Research Institute and Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
Minren Lin
Affiliation:
Materials Research Institute and Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
Qun-Dong Shen
Affiliation:
Department of Polymer Science & Engineering and Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry & Chemical Engineering Nanjing University, Nanjing, 210093, China
Qiming Zhang
Affiliation:
Materials Research Institute and Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
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Abstract

The poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) based ferroelectric and relaxor materials have been proved to be good electrocaloric (EC) materials. To further enhance the EC effect in ferroelectric relaxor terpolymer poly(vinylidene fluoride–trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE)), composites such as polymer-polymer blends and nanocomposites filled with inorganic nanoparticles are fabricated and investigated. It is found that the addition of small amount of filler (such as P(VDF-TrFE) or nano-ZrO2) can increase terpolymer’s crystallinity and enhance its relaxor behavior through interface couplings. The increased crystallinity and enhanced relaxor behavior together result in enhanced electrocaloric effect. The results demonstrate the promise of composite approaches in tailoring and enhancing ECE in the relaxor terpolymers.

Type
Articles
Copyright
Copyright © Materials Research Society 2013 

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References

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