AbstractA novel membrane effective in the separation of ethanol‐water mixtures by pervaporation was made by combining zeolite NaA and poly(vinyl chloride) modified by 2‐(2′‐butoxyethoxy)ethyl thiolate. Under ambient conditions, a separation factor (α H 2O) of 29 and pervaporability (P H 2O) of 4 × 10−4g m−1h−1were obtained for the azeotropic mixture whereas, in the absence of zeolite, the respective values were 7 and 7 × 10−5. A mechanism was proposed relating the preferential water transport at ≈︁ 50 zeolite content to an interfacial “phase” between th
展开▼
