Abdol Mohammad Attaran - Department of Chemistry, Payame Noor University, Delijan, I.R. Iran
Khadijeh hooshyari - Department of Chemistry, Amirkabir University of Technology, Tehran, I.R. Iran
Mehran Javanbakht - Department of Chemistry, Amirkabir University of Technology, Tehran, I.R. Iran
Morteza Enhessari - Department of Chemistry, Islamic Azad University, Naragh Branch, Naragh, I.R.Iran

PVA (poly vinyl alcohol)-MnTiO (PM) and PVA-PVP (poly 3 vinyl pyrrolidone)-MnTiO3 (PPM) nanocomposite membranes have been prepared with solutions casting method. Glutaraldehyde (GA) was usedas cross linking agent. The results showed that the proton conductivity and water uptake of the nanocompositemembranes due to hydrophilic nature of MnTiO3 nanoparticles were higher than that of the PVA membrane.PPM membranes containing 5 wt. % of MnTiO3nanoparticles and PVA:PVP, 80:20, demonstrated higher thermal stability, water uptake (310%) and proton conductivity (2.1 ×10 2 S/cm) than PM membranes, due to hydrophiliceffect of PVP, which can made strong hydrogen-bonding, intense intra-molecular interaction and reduce the crystallinity of the PVA polymer

PEM fuel cells/ Poly vinyl alcohol/ Poly vinyl pyrrolidone/ Nanocomposite membrans/ Proton conductivity