Novel partially fluorinated graft block copolymer ionomer as potential proton exchange membrane material

摘要: Abstract A novel well-defined graft block copolymer ionomer consisting of poly(2,2,3,3,3-pentafluoropropyl methacrylate)-block-poly(9-anthrylmethyl methacrylate) backbone and partially sulfonated polystyrene side chains, i.e. (PFPMA-b-PMMAnt)-g-SPS was synthesized using double click reactions (Cu catalyzed Huisgen Diels–Alder reactions) postsulfonation reaction. The synthesis this is a three-step procedure including (i) the preparation maleimide, alkyne azide end-functional polymers via atom transfer radical polymerization (ATRP), (ii) performing in one-pot technique, (iii) sulfonation reaction phenyl ring to yield microphase separated structure. 1H NMR, FT-IR spectroscopy, SEC (size exclusion chromatography) results present successful “grafting from” method ATRP Both membranes from its poly(phenylene oxide) (SPPO) blends were prepared by solution casting method. produced characterized terms ion exchange capacity (IEC), water uptake, proton conductivity, thermal properties. Oxidative stabilities also investigated Fenton test. morphology dry scanning electron microscopy (SEM). It has been found that conductivity ionomer/SPPO blend membrane measured at 80 °C relative humidity 100% considerably higher than pure SPPO possessing ion-exchange capacity.