摘要
采用干-湿相转化法研究了聚偏氟乙烯(PVDF)中空纤维超滤膜的制备。选用PVDF为膜材料,N,N-二甲基乙酰胺(DMAc)为溶剂,聚乙烯吡咯烷酮(PVP)和聚乙二醇(PEG)为添加剂,考察了一定条件下PVDF和PVP的百分含量及PEG的分子量对膜孔径、机械性能、水通量及形貌结构的影响,用正交实验设计确定了制膜的最佳配方为:PVP含量14%,PVDF含量18%,PEG分子量为200。此配方下所制备的中空纤维膜圆整度较好,断裂强力为3.2 N,断裂伸长率为70%,泡点为0.43 MPa,平均孔径为0.081μm,纯水通量为178 L/(m^2·h)。
The paper researched on hydrophilic PVDF hollow fiber membrane preparation by dry-wet phase inversion method, which using PVDF as membrane material, dimethylacetamide (DMAc) as solvent, and polyvinylpyrrolidone (PVP) and polyethylene glycol (PEG) as additive. The factors influenced the membrane pore size, mechanical properties, pure water flux and morphology such as the percentage composition of PVDF and PVP and the molecular weight of PEG were discussed. The optimal formula for membrane preparation decided by orthogonality experiment was as follows: the mass concentration of PVP and PVDF were 14%and 18% respectively, the molecular weight of PEG was 200. Membrane prepared under this formula had good roundness, and the breaking strength, elongation at break, bubble point, average pore diameter and pure water flux were 3.2 N, 70%, 0.43 MPa, 0.081 p,m and 178 L/(m2.h) respectively.
作者
王蕾
韩君
徐愿坚
张卫东
张如意
凡祖伟
WANG Lei HAN Jun XU Yuanjian ZHANG Weidong ZHANG Ruyi FAN Zuwei(Beijing E&E Technologies Group Corporation Limited, 101300 Beijing University of Chemical Technology, 100029 Beijing, China)
出处
《水处理技术》
CAS
CSCD
北大核心
2017年第3期39-41,46,共4页
Technology of Water Treatment
基金
北京市科技计划项目"基于膜法处理浓排水的正渗透摸成套装备开发"(Z161100001216004)
北京市科技计划项目"工业循环冷却水系统节水关键技术研发与示范"(Z161100001216009)
北京市朝阳区协同创新项目"用于工业污水处理的纳滤膜产品开发"(XC1605)