Synthesis of PDMS-PS IPN Pervaporation Membrane for Pervaporation Recovery of Butanol
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Polydimethylsiloxane (PDMS)-polystyrene (PS) interpenetrating polymer network (IPN) was prepared and characterized by FTIR, TGA, WCA, swelling experiments, and SEM. The IPN was used for pervaporation (PV) recovery of butanol. Both the permeation flux and separation factor increased with feed temperature, and both water and butanol fluxes increased with feed concentration, while no obvious effect of concentration on separation factor was found. Through the formation of IPN structure, the total flux of PDMS-PS IPN pervaporation membrane increased greatly with the decrease of separation factor. At the feed temperature of 60 °C, the IPN membrane obtained a total flux of 920.3 g/m2h with a separation factor of 9.5.
Key wordsbutanol interpenetrating polymer network PDMS PS
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This work was partially supported by the National Natural Science Foundation of China (51572201), the National ‘Pilot Scheme for Advanced Students in Basic Studies’ (20160210) and the Wuhan University Experimental Center Open Experimental Project (WHU-2018-XYKF-10). The authors would like to thank their kind help.
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