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- W2367713881 abstract "The PDMS-PPO asymmetric membranes were prepared via sol-gel process,when the PDMS-PPO block copolymers as membrane material,N-butanol as an additive,and chloroform as the solvent.The prepared membranes morphology and the element distribution in surface were characterized by scanning electron microscopy(SEM)and energy dispersive X-ray spectroscopy(EDS)respectively.Effects of casting solution concentration,downstream pressure and flow velocity on the separation performance of asymmetric membrane were also studied.The results showed that the asymmetric membrane separation factor and permeation flux increased first and then declined with the growth of the polymer concentration in the membrane solution.With the increasing of downstream pressure of membrane,the asymmetric membrane separation factor increased and permeation flux declined.The asymmetric membrane separation factor increased first and then declined and permeation flux reduced with the growth of flow velocity.The total permeation flux and the separation factor for ethanol can be 850.7g/(m2.h)and 8.78respectively,when polymer concentration in casting solution is 11%,the feed concentration is 5%,the feed solution temperature is 60℃,the downstream pressure is 10kPa and the flow velocity is 0.267L/min.The results showed that PDMS-PPO asymmetric membranes had a priority selectivity of ethanol and a higher permeate flux." @default.
- W2367713881 created "2016-06-24" @default.
- W2367713881 creator A5001699831 @default.
- W2367713881 date "2013-01-01" @default.
- W2367713881 modified "2023-09-25" @default.
- W2367713881 title "Pervaporation of water/ethanol binary mixtures by PDMS-PPO asymmetric membrane" @default.
- W2367713881 hasPublicationYear "2013" @default.
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