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.File | Dimensione | Formato | |
---|---|---|---|
2011_ChemMater.pdf
non disponibili
Tipologia:
Documento in Post-print
Licenza:
Accesso chiuso-personale
Dimensione
2.76 MB
Formato
Adobe PDF
|
2.76 MB | Adobe PDF | Visualizza/Apri |
I documenti in ARCA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.