铸膜液成分对聚砜超滤膜的影响  

Influence of casting solution composition on the polysulfone ultrafiltration membrane

作　　者：黄万抚[1] 梁娟[2] 李新冬[2] 

机构地区：[1]江西理工大学,资源与环境工程学院,赣州341000 [2]江西理工大学,建筑与测绘工程学院,赣州341000

出　　处：《化工新型材料》2016年第7期108-110,114,共4页New Chemical Materials

基　　金：国家自然科学基金项目(41362003);十二五国家科技支撑计划(2012BAB10B03);江西省研究生创新专项资金资助项目(YC2014-S353);江西理工大学科研基金项目(NSFJ2015-G04)

摘　　要：以聚砜(PSF)为膜材料,以聚乙二醇(PEG)、聚乙烯吡咯烷酮(PVP,K30)为添加剂,以N,N-二甲基乙酰胺(DMAc)为溶剂,采用相转化法制备聚砜超滤膜。实验研究了铸膜液中PSF浓度、PEG浓度和PVP浓度对超滤膜性能的影响。正交试验结果表明,PSF浓度对超滤膜性能影响最为显著,PEG浓度的影响最不显著;PSF浓度对超滤膜3个性能指标的影响性均为高度显著;PVP的浓度对纯水通量有一定影响,对BSA通量和BSA截留率为无明显影响。实验最终确定最佳超滤膜铸膜液配比为:PSF浓度为15%(wt,质量分数,下同),PVP浓度为5%,PEG浓度为4%。Polysulfone（PSF）ultrafiltration membrane was successfully prepared by means of phase inversion method,used PSF as raw material,polyvinyl pyrrolidone（PVP,K30）and polyethylene glycol（PEG）as additives,and dimethylacetamide（DMAC）as solvent.The effects of PSF and the additive concentration in the casting solution were investigated.The orthogonal experiment results showed that the most influential factor was PSF concentration and the less was PEG concentration.PSF concentration showed high significance on the membrane performance,PVP concentration had certain influence on the pure water flux,had little influence on the BSA flux and BSA rejection rate.Finally,the optimum casting solution for preparation of ultrafiltration membrane were determined as follows：PSF concentration 15wt%,PVP concentration 5wt%,PEG concentration 4wt%.

关 键 词：聚砜超滤膜 正交试验 聚乙二醇 聚乙烯吡络烷酮 

分 类 号：TQ051.893[化学工程]