SYNTHESIS, STRUCTURE AND CONDUCTIVITY CHA RACTERISTICS OF SEGMENTED COPOLYMER ELECTROLYTE WITH SULFONATE

The transesterification and polycondensition of hydroxy terminated pol yethylene oxide and ethylene glycol with dimethyl terephthalate and so dium dimethyl isophthalate sulfonate lead to the formation of ethylene oxide-(ethylene terephthalate-CO-sodium ethylene isophthalate sulfona te) segmented copolymer (EOTM-SO3Na). This segmented copolymer is a ne w single cationic conductor, The chain and aggregate structure of EOTM -SO3Na segmented copolymers were characterized by H-1 NMR , WAXD and D SC methods, The ion mobility measured by polar inversion method was ap proach to 1, The room temperature conductivity of EOTM-SO,Na cationic conductor can get 2, 3X10(-6) S . cm(-1). The temperature dependence o f the cationic conductivity for EOTM-SO3Na system can be described by VTF equation.