Synthesis,Structure and Conductivity Characteristics of Segmented Copolymer Electrolyte with Sulfonate

Abstract

Abstract: The transesterification and polycondensition of hydroxy terminated polyethylene oxide and ethylene glycol with dimethyl terephthalate and sodium dimethyl isophthalate sulfonate lead to the formation of ethylene oxide-(ethylene terephthalate-CO-sodium ethylene isophthalate sulfonate)segmented copolymer(EOTM-SO₃Na).This segmented copolymer is a new single cationic conductor.The chain and aggregate structure of EOTM-SO₃Na segmented copolymers were characterized by ¹HNMR, WAXD and DSCmethods. The ion mobility measured by polar inversion method was approach to 1. The room temperature conductivity of EOTM-SO₃Na cationic conductor can get 2.3× 10^-6S·cm^-1. The temperature dependence of the cationic conductivity for EOTM-SO₃Na system can be described by VTF equatlon.

Key words: Ethylene oxide-(ethylene terephthalate-CO-sodium ethylene isophthalate sulfonate) segmented copolymer, Single cationic conductor, Ionic conductivity, Ion mobility

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MA Jian-Ming, LUO Xiao-Lie, WANG Xiao-Yan, LIU Wan-Yu, MA De-Zhu . Synthesis,Structure and Conductivity Characteristics of Segmented Copolymer Electrolyte with Sulfonate[J]. Chem. J. Chinese Universities, 1995, 16(10): 1645.

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Synthesis,Structure and Conductivity Characteristics of Segmented Copolymer Electrolyte with Sulfonate

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