PEBA /EPH Thermo-reversible gel membranes were prepared by thermally induced phase separation( TIPS) method. The physical and chemical structure and CO2/ N2gas permeation properties for these membranes were characterized as a function of EPH content. The results showed that PEBA / EPH gel membranes have excellent mechanical property and high permeability. With the addition of EPH,the crystallinity and melting temperature of the membranes decrease obviously,which result in a significant increase in permeabil...