Enhanced electrocaloric effect in poly(vinylidene fluoride-trifluoroethylene)-based terpolymer/copolymer blends

被引：43

作者：

Chen, Xiang-zhong ^{[1
,2
,3
,4
]}

Qian, Xiao-shi ^{[1
,2
]}

Li, Xinyu ^{[1
,2
]}

Lu, S. G. ^{[1
,2
]}

Gu, Hai-ming ^{[1
,2
]}

Lin, Minren ^{[1
,2
]}

Shen, Qun-dong ^{[3
,4
]}

Zhang, Q. M. ^{[1
,2
]}

机构：

[1] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

[2] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA

[3] Nanjing Univ, Sch Chem & Chem Engn, Dept Polymer Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China

[4] Nanjing Univ, Sch Chem & Chem Engn, Key Lab Mesoscop Chem, MOE, Nanjing 210093, Jiangsu, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 22期

关键词：

ELECTROMECHANICAL PROPERTIES; FERROELECTRIC POLYMERS; MICROSTRUCTURE; REFRIGERATION;

D O I：

10.1063/1.4722932

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electrocaloric effect in the blends of poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE)) with small amount of poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) is investigated. It was found that small amount of P(VDF-TrFE) (similar to 10 wt. %) can cause a more than 10% increase in the crystallinity in the blends. Although the two polymers form separate crystalline phases, the interfacial couplings to the random defects in the terpolymer convert the normal ferroelectric P(VDF-TrFE) into a relaxor ferroelectric. As a result, the blends with 10 wt. % of P(VDF-TrFE) exhibit a 30% increase in the adiabatic temperature change over the entire experimental temperature range (20 degrees C-60 degrees C). (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4722932]

引用

页数：4

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