Exploration of dielectric constant dependence on evolution of microstructure in nanotube/ferroelectric polymer nanocomposites

被引：37

作者：

Yao, Sheng-Hong ^{[1
,2
]}

Dang, Zhi-Min ^{[1
,2
]}

Xu, Hai-Ping ^{[1
,2
]}

Jiang, Mei-Juan ^{[2
]}

Bai, Jinbo ^{[3
]}

机构：

[1] Beijing Inst Chem Technol, Key Lab, Minist Educ Nanomat, Beijing 100029, Peoples R China

[2] Beijing Inst Chem Technol, Key Lab Beijing City Preparat & Possesing Novel M, Minist Educ Nanomat, Beijing 100029, Peoples R China

[3] Ecole Cent Paris, Lab MSSMAT, CNRS, UMR 8579, F-92295 Chatenay Malabry, France

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 08期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2870104

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Multiwall carbon nanotube (MWNT) with high aspect ratio (AR=125-750) was dispersed into polyvinylidene fluoride (PVDF) to fabricate the MWNT/PVDF nanocomposites. Change of dielectric constant with increasing the length of tensile strain (LTS) was observed in the MWNT/PVDF composites with different mass concentration of MWNT (m(MWNT) = 1.0% and mMWNT = 2.0%). The results showed that an abrupt increase in dielectric constant appeared when the LTS was 4 and 2 mm in the composites with (m(MWNT) = 1.0% and m(MWNT) = 2.0%, respectively. By employing the evolutions of conductive pathway and microcapacitance structure during the tensile strain process, the increased dielectric constant could be explained well. (c) 2008 American Institute of Physics.

引用

页数：3

共 14 条

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