2002•Membrane science and technology/Membrane science and technology seriesRequires access
Studies of PVA membrane,cellulose ester membrane and their pervaporation performance for separation organic/organic mixture (II) Effect of making-membrane condition on pervaporation performance
Lifang Zhu
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Abstract
Polyvinyl alcohol(PVA)composite membranes were prepared by means of the solvent complete evaporation.It was shown from the experiment results by separating MTBE/MeOH mixture that the optimum making membrane conditions are the concentration of PVA:7% (mass fraction),the concentration of maleic acid:3% (mass fraction),the temperature of heat treatment:130～150 ℃.CTA hollow fiber membrane was modified for pervaporation by soaking in 1%～2% (volume fraction) acetone aqueous solution for 4～8 hours.The separation performance of CTA hollow fiber membrane modified was superior to that of the other cellulose ester membranes.The separation performance of PVA/CA composite membrane was superior to that of PVA/PAN composite membrane for MTBE/MeOH mixture.