基于相转化法的成膜条件对聚砜膜结构的影响  

Effects of the deposition conditions based on Phase inversion method on characterization of polysulfone ultrafiltration membrane

作　　者：薛育宴 孙爱玲[1] 仝东超 展先辉 廉景燕[1] 

机构地区：[1]天津理工大学化学化工学院,天津300384

出　　处：《天津理工大学学报》2014年第2期38-41,共4页Journal of Tianjin University of Technology

基　　金：国家"973"计划重点项目(A000211102-5)

摘　　要：采用相转化法制备聚砜超滤膜,分别以甲醛溶液、乙醇溶液、DMAC溶液、蒸馏水以及自来水作为凝固浴,含量均为5%.并在其他因素不变的条件下,控制聚砜膜空气中停留时间,并对聚砜超滤膜的断面结构以及表面结构进行了测试及表征.结果表明,使用水作为凝固浴组成时膜的选择性最好,断面结构分布均匀;空气中停留时间为15秒时选择性较好,指状孔结构分布均匀.Polysulfone ultrafiltration membrane was prepared by the method of Phase inversion. Casting solution consists of methanal、ethyl alcohol、dimethylacetamide（ DMAC） 、distilled water、and main-water as coagulation bath. The concentration of the additive was 5%. When the other factors unchanged,changed the residence time,then the section and the surface structure of polysulfone ultrafiltration membrane were tested and characterized. The results show that when main-water was used as coagulation bath,membrane selectivity was best,cross section structure distribution was uniform; when residence time was 15 seconds,membrane has good selectivity,finger pore structure distribution was uniform.

关 键 词：聚砜膜 凝固浴组成 停留时间 膜结构 

分 类 号：TQ028[化学工程]