Ion exchange membranes based upon crosslinked sulfonated polyethersulfone for electrochemical applications

Walid Mabrouk (1) , L. Ogier (2) , Serge Vidal (2) , Cyrille Sollogoub (3) , F. Matoussi (4) , J. F. Fauvarque (1)

1 P2AM - Propriétés et architectures des alliages et mélanges
2 Eras Labo
3 PIMM - Laboratoire Procédés et Ingénierie en Mécanique et Matériaux
4 Chemical and Biological Engineering Department

Synthesis and characterization of new ion exchange membranes made from chlorosulfonated polyethersul- fone (SO2Cl-PES) crosslinked by polyaminated crosslinking reagents have been performed. Two examples are described: one crosslinked by hexane diamine, the other by amino-polyethersulfone (NH2-PES). Sulfonated polyether sulfone (S-PES) and NH2-PES have similar chemical structures that allow compatibility. Surpris- ingly enough, better results were obtained using amino-polyethersulfone. The best results have been obtained using SO2Cl-PES with 1.3 SO2Cl group per monomer unit crosslinked by 0.2 equivalent of NH2-PES. The membranes, less brittle than pristine SPES and insoluble in solvents such as DMAc, were characterized by TGA, DMA, DSC, ionic conductivity, transport numbers, and water swelling. The results showed that these membranes presented very promising performances for use in Proton Exchange Membrane Fuel Cells.

Mots clés: Ionic conductivity; Amino-polyethersulfone; Crosslinked sulfonatedpolyethersulfone; Protonexchangemembranefuelcell

Domaines: Matériaux; Mécanique [physics.med-ph]; Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]

Walid Mabrouk, L. Ogier, Serge Vidal, Cyrille Sollogoub, F. Matoussi, et al.. Ion exchange membranes based upon crosslinked sulfonated polyethersulfone for electrochemical applications. Journal of Membrane Science, 2013, 452, pp.263-270. ⟨10.1016/j.memsci.2013.10.006⟩. ⟨hal-00980789⟩