纺膜参数对PVC中空纤维膜结构与性能的影响
Effects of spinning membrane parameters on the structure and properties of PVC-CA hollow fiber membrane
蔡新宇 1张凯 1王露 1程亮 1魏永明 1杨虎 1马晓华 1许振良1
作者信息
- 1. 化学工程联合国家重点实验室,华东理工大学化学工程研究所,膜科学与工程研发中心,上海 200237
- 折叠
摘要
以聚氯乙烯(PVC)和醋酸纤维素(CA)为膜材料,采用非溶剂致相分离(NIPS)法,通过改变纺膜参数制备了 PVC中空纤维膜.结果表明:所制得的中空纤维膜具有致密皮层,断面为海绵孔与指状孔共存结构,纯水通量可达314 L/(m2·h),BSA截留率可达95.0％,断裂强度22 MPa.此外,细中空纤维膜可在0.6 MPa压力以下稳定运行,并可对自来水中的有机物深度脱除 49.30％.
Abstract
The PVC-CA hollow fiber membranes were prepared by the non-solvent-induced phase separation(NIPS)method using polyvinyl chloride(PVC)and cellulose acetate(CA)as membrane materials and by changing the spinning parameters.The characterization results showed that the hollow fiber membranes had a dense skin layer,a cross-sectional structure of sponge pores and finger pores,a pure water flux of 314 L/(m2·h),a BSA retention rate of 95.0％,and a fracture strength of 22 MPa.In addition,the fine hollow fiber membranes could operate stably under 0.6 MPa pressure and could remove 49.30％of organic matter from tap water.
关键词
聚氯乙烯(PVC)/中空纤维膜/NIPS法/膜结构Key words
polyvinyl chloride(PVC)/hollow fiber membrane/NIPS method/membrane structure引用本文复制引用
基金项目
国家自然科学基金(22278132)
国家自然科学基金(21978082)
出版年
2024
NETL
NSTL
维普
万方数据