para fluoro-thiol clicked diblock-copolymer self-assembly: Towards a new paradigm for highly proton-conductive membranes

Sulfonated sPPFS-b-PBuA diblock and statistical copolymers based on 2,3,4,5,6-pentafluorostyrene PFS butyl acrylate BuA were elaborated for Proton Exchange Membrane Water Electrolyser (PEMWE) purposes. The block (BCP) synthetized by Nitroxide Mediated Polymerization NMP, a controlled radical polymerization technique that yields well-defined molar mass low dispersity material. These diblock-copolymers have the ability to self-assemble due immiscibility of two macromolecular segments PPFS PBuA. Statistical similar chemical composition both NMP in solution free FRP emulsion as waterborne dispersed polymer with highest mass. sulfonated mild click-reaction, namely an organo-catalyzed nucleophilic substitution reaction sodium 3-mercapto-1-propanesulfonate (SMPS) at temperature. morphology diblock-copolymer BCP was studied SAXS AFM, revealing nano-phase-segregated membrane. mechanical properties membranes improved ionic crosslinking polybenzimidazole (PBI-OO). Finally, conductive BCPs investigated function parameters such BCP, mass, sulfonation degree materials.