Glycerine treatment of poly-perfluorosulphonic acid membrane modified by sulfonamide groups: Glycerine treatment of PFSA-NH membrane

Abstract

Poly-perfluorosulfonic acid (PFSA) membranes modified by sulfonamide groups are obtained by ammonia treatment followed by a glycerine treatment. Fourier transform infrared spectroscopy (FT-IR) was used for identifying the specific functional groups. Thermal properties, such as glass transition and degradation, are studied by Differential Scanning Calorimetry (DSC) and by Thermo Gravimetric Analysis (TGA). The in-plane four-electrode technique was used for obtaining proton conductivity values as function of temperature. © 2012 Springer Science+Business Media B.V.