Effects of spinning membrane parameters on the structure and properties of PVC-CA hollow fiber membrane
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.
NETL
NSTL
万方数据
维普
