FT-IR, TGA, DSC and PCM Characterization ofSynthesised 1-Vinyl-1,2,4-Triazole Proton ExchangeMembranes (PEMS) for Use in Polymer ElectrolyteMembrane Fuel Cells (PEMFCS)

摘要

Aim: To synthesize a polymer electrolyte membranes with semi interpenetrating polymer network (semi-IPN) structures consisting of poly (vinylidene fluoride) (PVDF) and poly(1-vinyl-1,2,4-triazole-co-divinyl benzene) (P(VTri-co-DVB)) and to characterized by FT-IR spectroscopic analysis, thermo gravimetric Analysis (TGA), proton conductivity measurement and Differential scanning calorimetry (DSC).Study Design: Synthesizing anhydrous electrolyte membranes, cheaper than DuPont’s Nafion, and with high proton conductivities at elevated temperatures.Place and Duration of Study: Department of Chemistry Fatih University, Istanbul, Turkey. Between September 2013 to January 2014.Methodology: The methodology employed is the in situ synthesis, whereby all reactants are mixed before the triggering the polymerization or cross-linking reaction.Results: The synthesized membranes, PVDF/P(VTri- co -DVB)/TA, were characterized by FTIR spectroscopy. Thermal stability of the samples was investigated using TGA. The TGA plots of PVDF/P(VTri-co-DVB)/TA membranes with two different PVDF contents showed a satisfactory thermal stability up to 320°C and 340°C. As PVDF content was doubled, thermal stability slightly increased as expected.Conclusion: Polymer electrolyte membranes with semi interpenetrating polymer network (semi-IPN) structures consisting of poly (vinylidene fluoride) (PVDF), poly (1-vinyl-1,2,4-triazole- co -divinyl benzene) (P(VTri- co -DVB)), and triflic acid (TA) were successfully fabricated in one pot and in a single step.