Two series of membranes, A and B, were prepared by the following synthesis protocols. A-type membranes were obtained by a solvent casting process from solutions prepared by dissolving three different blends of poly(1-oxotrimethylene) (PK) and sulfonated poly(p-phenylenesulfone) (sPSO(2)) in DMAc. B-type materials were prepared using a two-step process. First, an inorganic organic hybrid nanofiller was synthesized by CO-ethene copolymerization in the presence of silica nanoparticles. From this synthesis, a hybrid nanofiller, [SiO(2)/(PK)(0.65)], with 35 wt % of SiO(2) was obtained. Membranes were produced by a solvent casting process from solutions prepared by dispersing different amounts (10, 20, 30 wt %) of the [SiO(2)/(PK)(0.65)] nanofiller in a sPSO(2)/DMAc solution. As compared to pristine sPSO(2) and the A-type materials, the presence of the hybrid nanofiller in the B-type membranes reduces the water uptake and membranes' swelling and increases the proton conductivity at low membrane hydration levels.

New Sulfonated Poly(p-phenylenesulfone)/Poly(1-oxotrimethylene) Nanocomposite Proton-Conducting Membranes for PEMFCs

TONIOLO, Luigi;POLIZZI, Stefano
2011-01-01

Abstract

Two series of membranes, A and B, were prepared by the following synthesis protocols. A-type membranes were obtained by a solvent casting process from solutions prepared by dissolving three different blends of poly(1-oxotrimethylene) (PK) and sulfonated poly(p-phenylenesulfone) (sPSO(2)) in DMAc. B-type materials were prepared using a two-step process. First, an inorganic organic hybrid nanofiller was synthesized by CO-ethene copolymerization in the presence of silica nanoparticles. From this synthesis, a hybrid nanofiller, [SiO(2)/(PK)(0.65)], with 35 wt % of SiO(2) was obtained. Membranes were produced by a solvent casting process from solutions prepared by dispersing different amounts (10, 20, 30 wt %) of the [SiO(2)/(PK)(0.65)] nanofiller in a sPSO(2)/DMAc solution. As compared to pristine sPSO(2) and the A-type materials, the presence of the hybrid nanofiller in the B-type membranes reduces the water uptake and membranes' swelling and increases the proton conductivity at low membrane hydration levels.
2011
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10278/31692
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