多嵌段共聚物磺酸盐离子导体的合成、结构及导电特性

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

合成了系列环氧乙烷－（对苯二甲酸乙二酯－ＣＯ－间苯二甲酸乙二酯磺酸钠）多嵌段共聚物（ＥＯＴＭ－ＳＯ_３Ｎａ），用ＮＭＲ、ＷＡＸＤ和ＤＳＣ等方法进行了结构表征。ＥＯＴＭ－ＳＯ_３Ｎａ是一种新型的单阳离子导体，室温电导率可达２．３×１０^（－６）Ｓ·ｃｍ（－１）

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 1H NMR, WAXD and DSC methods. 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(-6)S·cm(-1). The temperature dependence of the cationic conductivity for EOTM-SO3Na system can be described by VTFequatlon.