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Gel polymer electrolyte based on poly(methyl methacrylate-maleic anhydride)-poly(ethylene glycol) monomethyl ether and organophilic rectorite clay

Published online by Cambridge University Press:  09 July 2018

Yun Huang ,
Xu Wang ,
Xianru He  and
Yan Yang
Yun Huang*
Affiliation:
School of Materials Science and Engineering, Southwest Petroleum University, Chengdu, 610500, China
Xu Wang
Affiliation:
School of Materials Science and Engineering, Southwest Petroleum University, Chengdu, 610500, China
Xianru He
Affiliation:
School of Materials Science and Engineering, Southwest Petroleum University, Chengdu, 610500, China
Yan Yang
Affiliation:
School of Materials Science and Engineering, Southwest Petroleum University, Chengdu, 610500, China
*
*E-mail: huangyun213@yahoo.com.cn
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Abstract

A grafted polymer (P(MMA-MAh)-PEGME)) was synthesized by reacting poly(ethylene glycol) monomethyl ether (PEGME) with copolymer of poly(methyl methacrylate-maleic anhydride) (P(MMA-MAh)and end-capping the residual carboxylic acid with methanol. Natural rectorite (REC) was made organophilic by modification with the surfactant dodecyl benzyl dimethyl ammonium chloride. The organoclay was termed OREC and was used as a filler additive to modify gel polymer electrolytes (GPEs) which consisted of the grafted polymer (used as a polymer matrix), propylene carbonate (PC) as a plasticizer and LiClO4 as a lithium ion producer.

The temperature dependence of the ionic conductivity of the GPEs agreed well with the VTF (Vogel-Tamman-Fulcher) relation. 5 phr doses of OREC resulted in the highest ionic conductivity. Using OREC also considerably improved the plasticizer retention levels. As a consequence of OREC occupation of the free volume space in the polymer matrix of GPEs, the bulk resistance of the GPEs was reduced and the glass transition temperature (Tg) increased. From the present research, it can be concluded that the incorporation of PEGME into the copolymer of P(MMA-MAh) produced a great improvement in ionic conductivity, plasticizer retention capability and movement of carrier charge of Li+.

Keywords

rectoritegel polymer electrolytesionic conductivitypolymers
Type
Research Article
Information
Clay Minerals , Volume 45 , Issue 4 , December 2010 , pp. 431 - 440
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2010

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