摘要
采用带空气段的非溶剂致相分离（NIPS）法制备了CA/PES共混中空纤维超滤膜。通过前期实验确定了CA/PES溶液的聚合物总质量分数为25%,CA和PES的质量比为9∶1.研究了空气段间距（1-17cm）对CA/PES共混超滤膜性能的影响.实验结果表明,当空气段间距为9cm时,CA/PES共混超滤膜的通量为73.3L/（m2·h）,对PEG20000的截留率达84.2%,膜孔径为4.6nm.
CA/PES hollow fiber ultra-filtration （UF） membranes were prepared via non-solvent induced phase separation （NIPS） method with air gap. Based on the previous experiments, the total concentration of cellulose acetate （CA）/polyethersulphone （PES） blend solution was chosen as 25% and the mass ratio of CA/PES was 9 ： 1. The effect of the air-gap distance on the performance of CA/PES UF membranes was investigated. The results showed that the UF membrane has a pure water flux of 73. 3 L/（m2 · h）, a PEG20000 rejection of 84. 2% and 4. 6 nm pore size when the UF membrane was prepared with an air gap of 9 era.
出处
《膜科学与技术》
CAS
CSCD
北大核心
2016年第5期31-35,共5页
Membrane Science and Technology
基金
2013年国家新材料研发及产业化专项(GX1301)
国家科技支撑计划项目(2014BAB07B01)
江苏省科技工业支撑计划(BE2013031)
关键词
空气段
共混
超滤膜
醋酸纤维素
聚醚砜
air-gap distanee
blend
ultra-filtration membrane
cellulose aeetate
polyethersulphone
