混合溶剂相分离法制备高通量高截留PES膜  

Preparation of PES Membranes With High Flux and Protein Rejection by Mixed Solvent Phase Separation Method

作　　者：陈越 何春菊[1,2] Chen Yue;He Chunju(College of Materials Science and Engineering,Donghua University,Shanghai 201620,China;State KeyLaboratory for Modification of Chemical Fibers and Polymer Materials,Shanghai 201620,China)

机构地区：[1]东华大学材料科学与工程学院,上海201620 [2]纤维材料改性国家重点实验室,上海201620

出　　处：《山东化工》2023年第18期66-68,72,共4页Shandong Chemical Industry

摘　　要：选用DMAc和辛烷作为非溶剂致相分离法(NIPS)的混合溶剂制备聚醚砜(PES)膜,利用两种溶剂在高温下互溶、低温下相分离的特点,制备得到具备高孔隙率和纳米级表面孔径的PES膜。为进一步优化膜的结构性能,研究了辛烷加入量和预蒸发时间对膜性能的影响,最终制备得到孔径为12.50 nm、孔隙率高达89%的海绵状截面结构PES膜,其渗透通量可达65.23 L/(m2hbar),较优化前提升了160%;而对牛血清白蛋白(BSA)的截留率始终维持在95%以上,对同时实现膜的高渗透性和高选择性具有深刻意义。Polyethersulfone(PES)membranes with enhanced flux and high protein rejection were prepared using DMAc and octane as mixed solvents by non-solvent induced phase separation(NIPS)method.It has a high porosity up to 89%and nano pores of 12.50 nm.The effect of octane addition and pre-evaporation time was investigated to further optimize membrane performance.The flux was 65.23 L/(m 2hbar),which was 160%higher than that before optimization,while the BSA rejection was maintained at more than 95%.This study provides a new method to fabricate a membrane with high flux and high protein rejection.

关 键 词：混合溶剂 非溶剂致相转化 辛烷 聚醚砜超滤膜 

分 类 号：TQ028.8[化学工程]