Effect of functionalized montmorillonite addition on the thermal properties and ionic conductivity of PVDF-PEG polymer electrolyte

被引：35
|
作者：
Wang, Yun-Pu [1 ]
Gao, Xiang-Hu [1 ]
Wang, Rong-Min [1 ]
Liu, Han-Gong [1 ]
Yang, Chao [1 ]
Xiong, Yu-Bing [1 ]
机构：
[1] NW Normal Univ, Inst Polymer, Key Lab Polymer Mat Gansu Prov, Lanzhou 730070, Peoples R China
来源：
REACTIVE & FUNCTIONAL POLYMERS | 2008年 / 68卷 / 07期
关键词：
montmorillonite; polymer electrolyte; thermal stability; PVDF; PEG;
D O I：
10.1016/j.reactfunctpolym.2008.04.002
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Composite microporous polymer electrolyte membranes comprising poly(vinylidene fluoride), PVDF, poly(ethylene glycol), PEG, and 1-ethyl-3-methylimidazolium tetrafluoroborate functionalized montmorillonite (EMIm-MMT) were prepared by a phase inversion method. The EMIm-MMT was subjected to FTIR, WXRD, TGA and element analysis in order to better understand the intercalation of imidazolium cations in sodium montmorillonite (Na-MMT) through exchange with intermellar sodium ions and improved thermal stability compared to organic-montmorillonite (O-MMT). The studies of porosity, weight uptake, and ionic conductivity of composite microporous membrane were performed as a function of EMIm-MMT content. The addition of EMIm-MMT can greatly enhance the thermal stability of the polymer electrolyte membrane. The maximum conductivity at 25 degrees C was found to be 7.77 mS cm(-1) for PVDF-PEG/6wt% EMIm-MMT. (c) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1170 / 1177
页数：8
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