Poly(vinylidene fluoride)-graft-poly(2-hydroxyethyl methacrylate): a novel material for high energy density capacitors

被引：96

作者：

Thakur, Vijay Kumar ^{[1
]}

Tan, Eu Jin ^{[1
]}

Lin, Meng-Fang ^{[2
]}

Lee, Pooi See ^{[1
,2
]}

机构：

[1] Nanyang Technol Univ, Temasek Labs, Singapore 637553, Singapore

[2] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 637553, Singapore

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 11期

关键词：

RELAXOR FERROELECTRIC BEHAVIOR; SURFACE MODIFICATION; GRAFT-COPOLYMERIZATION; DIELECTRIC-RELAXATION; POLYMER; FLUOROPOLYMERS; FILMS; POLY(TETRAFLUOROETHYLENE); NANOCOMPOSITES; MEMBRANES;

D O I：

10.1039/c0jm02408b

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the graft copolymerization synthesis of novel high dielectric constant HEMA (2hydroxyethylmethacrylate)-graft-poly(vinylidene fluoride) (PVDF) copolymers for potential applications in high energy density capacitors. In the present study the graft copolymerization reaction was introduced by irradiation (electron beam) treatment of the PVDF polymer powder. The chemical changes in the PVDF polymers after HEMA grafting were monitored and the results were evaluated by FTIR, DSC, TGA and contact angle measurement. An analysis is presented on the effectiveness of this approach as a function of electron beam operating variables including radiation dose, reaction time, reaction temperature, monomer concentration and effect of solvent. The PHEMA-g-PVDF copolymers demonstrate improved dielectric properties such as high dielectric constant, lower leakage and low dielectric loss as compared to pristine PVDF. Correlation of dielectric properties with the graft copolymerization reaction mechanism was discussed.

引用

页码：3751 / 3759

页数：9

共 42 条

[1] Ferroelectric, electroactive, and dielectric-relaxation behavior of fluoropolymers [J].

Ang, C ;

Yu, Z .

ADVANCED MATERIALS, 2004, 16 (12) :979-+

[2] High-dielectric-constant ceramic-powder polymer composites [J].

Bai, Y ;

Cheng, ZY ;

Bharti, V ;

Xu, HS ;

Zhang, QM .

APPLIED PHYSICS LETTERS, 2000, 76 (25) :3804-3806

[3] Grafting of pre-irradiated poly(ethylene-alt-tetrafluoroethylene) films with styrene:: influence of base polymer film properties and processing parameters [J].

Brack, HP ;

Bührer, HG ;

Bonorand, L ;

Scherer, GG .

JOURNAL OF MATERIALS CHEMISTRY, 2000, 10 (08) :1795-1803

[4] Copolymers obtained by the radiation-induced grafting of styrene onto poly(tetrafluoroethylene-co-perfluoropropylvinyl ether) substrates.: 1.: Preparation and structural investigation [J].

Cardona, F ;

George, GA ;

Hill, DJT ;

Rasoul, F ;

Maeji, J .

MACROMOLECULES, 2002, 35 (02) :355-364

[5] Dielectric relaxations in PVDF/BaTiO3 nanocomposites [J].

Chanmal, C. V. ;

Jog, J. P. .

EXPRESS POLYMER LETTERS, 2008, 2 (04) :294-301

[6] A dielectric polymer with high electric energy density and fast discharge speed [J].

Chu, Baojin ;

Zhou, Xin ;

Ren, Kailiang ;

Neese, Bret ;

Lin, Minren ;

Wang, Qing ;

Bauer, F. ;

Zhang, Q. M. .

SCIENCE, 2006, 313 (5785) :334-336

[7] High energy radiation grafting of fluoropolymers [J].

Dargaville, TR ;

George, GA ;

Hill, DJT ;

Whittaker, AK .

PROGRESS IN POLYMER SCIENCE, 2003, 28 (09) :1355-1376

[8] Relaxor ferroelectric behavior of poly(vinylidene fluoride-trifluorethylene) copolymer modified by low energy irradiation [J].

Faria, Luiz O. ;

Welter, Cezar ;

Moreira, Roberto L. .

APPLIED PHYSICS LETTERS, 2006, 88 (19)

[9] PHOTOINITIATED SURFACE GRAFTING OF SYNTHETIC-FIBERS .3. PHOTOINITIATED SURFACE GRAFTING OF POLY(ETHYLENE-TEREPHTHALATE) FIBERS [J].

FENG, ZG ;

RANBY, B .

ANGEWANDTE MAKROMOLEKULARE CHEMIE, 1992, 196 :113-125

[10] The radiation chemistry of fluoropolymers [J].

Forsythe, JS ;

Hill, DJT .

PROGRESS IN POLYMER SCIENCE, 2000, 25 (01) :101-136

← 1 2 3 4 5 →