Self-polarized ferroelectric PVDF homopolymer ultra-thin films derived from Langmuir-Blodgett deposition

被引:115
作者
Chen, Shuting [1 ,2 ]
Li, Xue [1 ,2 ]
Yao, Kui [1 ]
Tay, Francis Eng Hock [2 ]
Kumar, Amit [2 ]
Zeng, Kaiyang [2 ]
机构
[1] ASTAR, Inst Mat Res & Engn, Singapore 117602, Singapore
[2] Natl Univ Singapore, Dept Mech Engn, Singapore 119260, Singapore
关键词
Poly(vinylidene fluoride) (PVDF); Ferroelectric polymer; Langmuir-Blodgett film; POLY(VINYLIDENE FLUORIDE) FILMS; CRYSTALLINE PHASE; BETA-CRYSTALLINE; TRANSITION; COPOLYMER; BLENDS; FORMS; WATER;
D O I
10.1016/j.polymer.2012.01.058
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
It was found that Langmuir-Blodgett (LB) deposition process led to the direct formation of ferroelectric 13 phase in poly(vinylidene fluoride) (PVDF) homopolymer ultra-thin films, in which the molecular chains were parallel to the substrates and the dipoles were aligned perpendicular to the substrates. Theoretical analysis and experimental results further showed that the mechanism of forming the beta phase and the dipole orientation were attributed to the hydrogen bonds formed between the PVDF molecules and water through the LB deposition. A large local effective piezoelectric coefficient (d(zz)) of -49.4 pm/V was observed in the self-polarized PVDF LB film. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1404 / 1408
页数:5
相关论文
共 21 条
[1]   Real-time investigation of crystallization in poly(vinylidene fluoride)-based nano-composites probed by infrared spectroscopy [J].
Asai, Kumiko ;
Okamoto, Masami ;
Tashiro, Kohji .
POLYMER, 2008, 49 (24) :5186-5190
[2]   The role of solution phase water on the deposition of thin films of poly(vinylidene fluoride) [J].
Benz, M ;
Euler, WB ;
Gregory, OJ .
MACROMOLECULES, 2002, 35 (07) :2682-2688
[3]   Nanocomposites of poly(vinylidene fluoride) with organically modified silicate [J].
Buckley, J ;
Cebe, P ;
Cherdack, D ;
Crawford, J ;
Ince, BS ;
Jenkins, M ;
Pan, JJ ;
Reveley, M ;
Washington, N ;
Wolchover, N .
POLYMER, 2006, 47 (07) :2411-2422
[4]   Two-dimensional ferroelectric films [J].
Bune, AV ;
Fridkin, VM ;
Ducharme, S ;
Blinov, LM ;
Palto, SP ;
Sorokin, AV ;
Yudin, SG ;
Zlatkin, A .
NATURE, 1998, 391 (6670) :874-877
[5]   Chemistry and properties of nanocrystals of different shapes [J].
Burda, C ;
Chen, XB ;
Narayanan, R ;
El-Sayed, MA .
CHEMICAL REVIEWS, 2005, 105 (04) :1025-1102
[6]   Comparative Investigation of the Structure and Properties of Ferroelectric Poly(vinylidene fluoride) and Poly(vinylidene fluoride-trifluoroethylene) Thin Films Crystallized on Substrates [J].
Chen, Shuting ;
Yao, Kui ;
Tay, Francis Eng Hock ;
Chew, Lydia Li Shan .
JOURNAL OF APPLIED POLYMER SCIENCE, 2010, 116 (06) :3331-3337
[7]   Ferroelectric poly(vinylidene fluoride) thin films on Si substrate with the β phase promoted by hydrated magnesium nitrate [J].
Chen, Shuting ;
Yao, Kui ;
Tay, Francis Eng Hock ;
Liow, Chung Lee .
JOURNAL OF APPLIED PHYSICS, 2007, 102 (10)
[8]   FERROELECTRIC PROPERTIES OF VINYLIDENE FLUORIDE COPOLYMERS [J].
FURUKAWA, T .
PHASE TRANSITIONS, 1989, 18 (3-4) :143-211
[9]   Factors governing ferroelectric switching characteristics of thin VDF/TrFE copolymer films [J].
Furukawa, Takeo ;
Nakajima, Takashi ;
Takahashi, Yoshiyuki .
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, 2006, 13 (05) :1120-1131
[10]   Determination of the α, β, and γ crystalline phases of poly(vinylidene fluoride) films prepared at different conditions [J].
Gregorio, R .
JOURNAL OF APPLIED POLYMER SCIENCE, 2006, 100 (04) :3272-3279