%0 journal article
%@ 0022-3093
%A Prado, L.A.S. de A.,Ponce, M.L.,Funari, S.S.,Schulte, K.,Haramus, V.M.,Willumeit, R.,Pereira Nunes, S.

%D 2005
%J Journal of Non-Crystalline Solids
%N 27-29
%P 2194-2199 
%R doi:10.1016/j.jnoncrysol.2005.06.007
%T SAXS/WAXS characterization of proton-conducting polymer membranes containing phosphomolybdic acid
%U https://doi.org/10.1016/j.jnoncrysol.2005.06.007
27-29 
%X In the present paper the distribution of phosphomolybdic acid (PMoA,H 3PMo12O40) dispersed in sulfonated poly(ether ether ketone),SPEEK, was investigated by simultaneous small/wide-angle X-ray scattering SAXS/WAXS technique. The hydrolysis and condensation of 3-aminopropyltrimethoxysilane or zirconium tetrapropylate in these polymeric matrices were used to produce poly(3-aminopropyl silsesquioxane) or ZrO2,as nano-fillers. Contrary to previous results reported for membranes containing phosphotungstic acid,the PMoA coalesced into mass-fractal structure,with fractal-dimension 1.85. The largest fractal aggregate was about 524 A˚ . Moreover,WAXS curves evidenced the crystallization of this heteropolyacid during the casting process. No changes concerning the distribution of PMoA were observed in the membranes containing SPEEK,PMoA and the poly(3-aminopropyl silsesquioxane).,On the other hand,no crystallization of the heteropolyacid was observed in the membranes containing ZrO2,although,denser surface fractal-like structures constituted by the heteropolyacid were observed.