化学工程2011，Vol.39Issue(7)：65-68,4.
聚丙烯腈超滤膜的制备
Preparation of polyacrylonitrile ultrafiltration membranes
方超平 1苏仪 2万印华1
作者信息
- 1. 中国科学院过程工程研究所生化工程国家重点实验室,北京100190
- 2. 中国科学院研究生院,北京100049
- 折叠
摘要
Abstract
For attaining the high performance ultrafiltration membranes, polyacrylonitrile (PAN) ultraflltration membranes were prepared by the phase inversion process, with PAN as raw material and /V-methyl-2-pyrrolidone (NMP) as solvent. The membranes were characterized in terms of the pure water flux, bovine serum albumin ( BSA) rejection and field emission scanning electron microscopy ( FESEM) observations. The effects of PAN mass fraction, different additives, different coagulation baths and coagulation temperature on membrane performance were investigated. The results show that BSA rejection can be improved by increasing PAN mass fraction, adding mass fraction 3% of small molecules containing hydroxyl group into the casting solution, decreasing the coagulation temperature, or adding mass fraction 10% NaCl into the coagulation bath, while the pure water flux of membranes may change in varying degrees. The experimental result reveals that the high performance membranes can be prepared by using mass fraction 3% LiCl · H2O as an additive, with water flux 227. 52 L/( m2 · h) and BSA rejection up to 97.70% .关键词
聚丙烯腈/超滤膜/相转化法Key words
polyacrylonitrile/ ultrafiltration membranes/ phase inversion分类
化学化工引用本文复制引用
方超平,苏仪,万印华..聚丙烯腈超滤膜的制备[J].化学工程,2011,39(7):65-68,4.
