Mohammad Hosein Moslemine - Department of Chemical, School Of Chemical, Islamic Azad University of Yazd, yazd, Iran
Yasamin Khosravi - Department of Chemical, School Of Chemical, Islamic Azad University of Yazd, yazd, Iran
Shadi Hasanajili - Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz, University, Shiraz, Iran

New organic–inorganic composite membranes based on sulfonated poly ether sulfone (SPE) for applicationin the direct methanol fuel cell (DMFC) were synthesized. The membranes’ water and methanol water uptake wereevaluated in pervaporation experiments and the conductivity determined by impedance spectroscopy. The absorption ofwater and methanol were decreased by inorganic modification. The first step was generation of SiO2. Modification ofpolymer matrix with modified silanes (CDI and AS) were decreased membranes’ absorption to water and methanolwithout decreasing in proton conductivity.

polymer electrolyte membrane; poly (ether sulfone); absorption; sulfonation