Pervaporation of ethanol/water mixture by organophilic nano-silica filled PDMS composite membranes
Abstract(#br)A novel organophilic nano-silica (ONS) filled polydimethylsiloxane (PDMS) composite membrane was prepared and characterized for the pervaporation (PV) of ethanol from water. The sorption and diffusion behaviors of ethanol and water in the composite membranes were investigated. The results showed that with increasing ONS concentration from 0\u003cce:hsp sp=\"0.25\"/\u003ewt.% to 10\u003cce:hsp sp=\"0.25\"/\u003ewt.%, the solubility selectivity and the diffusion selectivity increased from 21.87 to 38.85 and from 1.87 to 6.18, respectively.