Molecular mobility interpretation of the dielectric relaxor behavior in fluorinated copolymers and terpolymers

被引：31

作者：

Capsal, Jean-Fabien ^{[2
]}

Dantras, Eric ^{[1
]}

Lacabanne, Colette ^{[1
]}

机构：

[1] Univ Toulouse 3, Inst CARNOT CIRIMAT, F-31062 Toulouse, France

[2] Inst Natl Sci Appl, LGEF, F-69621 Villeurbanne, France

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2013年 / 363卷

关键词：

Dielectric relaxations; Thermostimulated currents; Relaxor; Terpolymers; Electroactive polymers; REARRANGING REGION SIZE; ELECTROMECHANICAL PROPERTIES; FERROELECTRIC PROPERTIES; VINYLIDENE FLUORIDE; PHASE-TRANSITIONS; GLASS-TRANSITION; RELAXATION; POLYMER; P(VDF-TRFE-CFE); MICROSTRUCTURE;

D O I：

10.1016/j.jnoncrysol.2012.12.008

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Thermo Stimulated Current and Dynamic Dielectric Spectroscopy have been applied to investigate dielectric relaxation modes of poly(vinylidene-fluoride-trifluoroethylene) copolymer and poly(vinylidene-fluoride-trifluoroethylene-chlorofluoroethylene) terpolymer. The aim of this work is to check the molecular origin of the ferroelectric relaxor behavior of the terpolymer. The combination of data obtained by both dielectric methods allows us to describe the molecular mobility of the amorphous phase and the cooperativity of the order/disorder dipolar transition in the crystalline phase. The introduction of 1,1-chlorofluoroethylene units in the main chain induces an increase of the Cooperative Rearranging Region size associated with less ordered and smaller crystallites. This morphological evolution is responsible of a lack of cooperativity and it explains the dielectric relaxor behavior of the poly(vinylidene-fluoride-trifluoroethylene-chloroethylene) terpolymer. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：20 / 25

页数：6

共 48 条

[11] Cooperative rearranging region size in semi-crystalline poly(L-lactic acid) [J].

Delpouve, N. ;

Saiter, A. ;

Mano, J. F. ;

Dargent, E. .

POLYMER, 2008, 49 (13-14) :3130-3135

[12] Inorganic ceramic/polymer ferroelectric composite electrets [J].

Dias, CJ ;

DasGupta, DK .

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, 1996, 3 (05) :706-734

[13]

Donth E, 1996, J POLYM SCI POL PHYS, V34, P2881, DOI 10.1002/(SICI)1099-0488(199612)34:17<2881::AID-POLB3>3.0.CO

[14]

2-U

[15]

Donth E, 1999, ACTA POLYM, V50, P240, DOI 10.1002/(SICI)1521-4044(19990701)50:7<240::AID-APOL240>3.0.CO

[16]

2-H

[17] Study by thermostimulated currents of dielectric relaxations through the glass transition in an amorphous polymer:: Poly(n-butyl methacrylate) [J].

Dudognon, E ;

Bernès, A ;

Lacabanne, C .

MACROMOLECULES, 2001, 34 (12) :3988-3992

[18] Low-frequency chain dynamics of poly(n-hexyl methacrylate) by dielectric spectroscopies [J].

Dudognon, E ;

Bernès, A ;

Lacabanne, C .

MACROMOLECULES, 2002, 35 (15) :5927-5931

[19] FERROELECTRIC PROPERTIES OF VINYLIDENE FLUORIDE COPOLYMERS [J].

FURUKAWA, T .

PHASE TRANSITIONS, 1989, 18 (3-4) :143-211

[20] Electron-irradiated electrostrictive P(VDF-TrFE) copolymer transducers [J].

Guo, SS ;

Li, WP ;

Li, K ;

Chan, HLW ;

Zhao, XZ ;

Choy, CL .

SENSORS AND ACTUATORS A-PHYSICAL, 2004, 112 (01) :134-141

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