Effect of shell-layer thickness on dielectric properties in Ag@TiO2 core@shell nanoparticles filled ferroelectric poly(vinylidene fluoride) composites

被引：53
|
作者：
Dang, Zhi-Min [1 ,2 ]
You, Shi-Shu [1 ]
Zha, Jun-Wei [1 ]
Song, Hong-Tao [1 ]
Li, Sheng-Tao [2 ]
机构：
[1] Beijing Univ Chem Technol, Key Lab Beijing City Preparat & Proc Novel Polyme, Beijing 100029, Peoples R China
[2] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2010年 / 207卷 / 03期
关键词：
POLYMER COMPOSITES; NANOCOMPOSITE;
D O I：
10.1002/pssa.200925471
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Ag@TiO2 core@shell nanoparticles filled ferroelectric poly(vinylidene fluoride) (PVDF)-based composites (0-3 connectivity) were prepared in order to study the effect of core@shell structure on dielectric permittivity in the Ag@TiO2/PVDF nanocomposites. The Ag@TiO2 core@shell nanoparticles were synthesized via a water-thermal meting route. Transmission electron microscope (TEM) images showed the nanoparticles were about 60-120 nm in diameter and the thickness of the shell layer was about 6-12 nm, which can be adjusted by changing the fabrication conditions. Results of dielectric measurements showed that the shell-layer thickness of the Ag@TiO2 core@shell nanoparticles played a key role in deciding the final values of the dielectric properties of the nanocomposites. The variation of dielectric properties of the nanocomposites with temperature also depends on the shell-layer thickness of the Ag@TiO2 core@shell nanoparticles. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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页码：739 / 742
页数：4
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