摘要
用溶剂完全蒸发法制备了PVA复合膜 .经对MTBE/MeOH混合物的分离实验得到了PVA复合膜的最佳成膜条件 ,即 :铸膜液中PVA、马来酸浓度分别为 7%、3% ,热处理温度130～ 15 0℃ .在 1%～ 2 %丙酮水溶液中浸泡处理 4～ 8h ,CTA中空纤维RO膜被改性成渗透汽化膜 .CTA中空纤维膜的分离性能优于其它醋酸纤维素系列膜 。
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.
出处
《膜科学与技术》
CAS
CSCD
北大核心
2002年第2期1-4,共4页
Membrane Science and Technology
基金
国家自然科学基金重点资助项目 (2 9836 16 0 )
