JOURNAL of the Tunisian Chemical Society

serving the Research, the Education and the Industry

Synthesis and proton conductive properties of novel sulfonated (sulfone-triazoles) copolymers

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A new bisphenol containing 1,2,3-triazole ring (BPT) was synthetized using the click reaction and copolymerized with diammonium salt of 4,4'-difluorodiphenylsulfone-3,3'-disulfonic acid (DFPSS) and 4,4'- difluorodiphenylsulfone (DFPS) to prepare new copper free sulfonated sulfone-(1,2,3-triazole) copolymers (SSTP) for use as a proton exchange membrane fuel cells. Four copolymers with different ion exchange capacity (IEC) in the range of 1 to 1.6 meqH+/g were obtained by varying the molar ratio of the 3 monomers. The structure of SSTP was confirmed by NMR. They are soluble in polar aprotic solvents such as NMP, DMF and DMSO and show good thermal properties. Membranes from three of these SSTPs were prepared using the solution casting method and characterized in order to determine their water uptake (WU) and their ionic conductivity at 80°C.

F. Sebai, I. Abdelhedi Miladi, C. Marestin, R. Mercier, H. Ben Romdhane

Proton exchange membrane fuel cells, sulfonated polytriazoles, click reaction

Pages 73-79

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