凝固浴温度与相转化聚醚砜中空纤维膜的结构与性能(英文)  

Effect of coagulation bath temperature on the structure and performance of polyethersulfone hollow fiber membranes by dry/wet process

作　　者：庞东旭[1] 吕少丽[1] 魏秀珍 朱宝库[1] 徐又一[1] 

机构地区：[1]浙江大学高分子科学研究所,浙江省杭州市310027

出　　处：《中国组织工程研究与临床康复》2008年第27期5381-5384,共4页Journal of Clinical Rehabilitative Tissue Engineering Research

基　　金：九七三资助项目(2003CB615705):面向应用过程的膜材料设计与制备基础的研究~~

摘　　要：以聚醚砜为膜材料、N,N-二甲基乙酰胺为溶剂、聚乙烯吡咯烷酮为添加剂配成稳定溶液,使用水为凝固浴,采用干/湿法溶液相转化制备聚醚砜中空纤维膜。分析了凝固浴温度及空气间隙距离对膜的表面孔结构、断面结构和其他性能的影响。发现升高凝固浴温度的同时,增大空气间隙,可以有效的增大膜外表面的孔径,膜断面近外皮层下结构由指状孔向海绵状孔转化。Polyethersulfone hollow fiber membranes were prepared from polyethersulfone/N, N-Dimethylacetamide/poly （N-vinyl-2-pyrrolidinone） systems by dry/wet phase inversion process using water as coagulation bath. The effects of coagulation bath temperature and air gap distance on the surface structure, cross section structure and water flux of membranes were discussed. As increasing the temperature of coagulation bath and the air gap distance, the size of the pores at the surface effectively increased, while the finger-like structure under the outer surface changed to a sponge-like structure.

关 键 词：聚醚砜 中空纤维膜 凝固浴温度 生物材料 

分 类 号：R318[医药卫生—生物医学工程]