【摘 要】
：
In this study,a new type of ultrathin solid polymer electrolyte PEI/Pebax2533/AgBF4 composite membrane (PEI:polyetherimide; Pebax2533:Polynylonl2/tetramethylene oxide block copolymer,PA12-PTMO) is pre
【机 构】
：
National Engineering Research Center of Membrane Technology,Dalian Institute of Chemical Physics,Chi
【出 处】
：
The 6th International Conference on Separation and Technolog
论文部分内容阅读
In this study,a new type of ultrathin solid polymer electrolyte PEI/Pebax2533/AgBF4 composite membrane (PEI:polyetherimide; Pebax2533:Polynylonl2/tetramethylene oxide block copolymer,PA12-PTMO) is prepared with complexing method.For PEI/Pebax2533/AgBF4 composite membranes prepared with AgBF4 concentration high enough,the AgBF4 content in the solid polymer electrolyte layer will breakthrough the threshold silver content C*(4.5mol/L),and the percolation channels for olefin moleculars are formed for olefm facilitated transport.PEI/Pebax2533/AgBF4 composite membrane prepared with 8.0mol/L AgBF4 solution shows a propylene/propane selectivity of up to 1000 and propylene permeance of 36GPU with dry feed pure gas.Because of the carrier-facilitated transport process,the olefin-induced plasticization effect is completely suppressed.According to TEM observation,an ultrathin solid polymer electrolyte layer of 100-200nm thickness exists in the external surface of the pebax2533 layer of PEI/Pebax2533/AgBF4 composite membrane.
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