%0 journal article %@ 0892-7022 %A Zoppi, R.A., das Neves, S., Pereira Nunes, S. %D 2000 %J Polymer %P 5461-5470 %T Hybrid films of poly ( ethylene oxide-b -amide-6 ) containing sol-gel silicon or titanium oxide as inorganic fillers: effect of morphology and mechanical properties on gas permeability %U %X