紫外分步辐照接枝制备亲水性荷负电纳滤膜  

Preparation of Hydrophilic Negatively Charged Nanofiltration Membrane by UV Irradiation Two-Step Graft Polymerization

作　　者：曹绪芝[1] 平郑骅[2] 李本刚[1] 郭斌[1] 

机构地区：[1]南京林业大学理学院化学与材料科学系,江苏南京210037 [2]教育部聚合物分子工程重点实验室,复旦大学高分子科学系,上海200433

出　　处：《高分子材料科学与工程》2012年第9期133-136,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(20904021);南京林业大学高学历人才资助项目

摘　　要：通过在聚醚砜(PES-C)微孔膜表面紫外分步辐照接枝甲基丙烯酸羟乙酯(HEMA)和苯乙烯磺酸钠(SSS)制备了一种新型的亲水性荷负电纳滤膜。通过测定膜的纯水通量和对不同盐溶液的表观截留率的变化,系统研究了制备条件对膜分离性能的影响。结果表明,采用该方法制成的纳滤膜对高价阴离子盐溶液Na2SO4的表观截留率和渗透通量都较高,如HEMA先辐照接枝120s、SSS再继续接枝15min制得的膜对Na2SO4截留率大于95%,而渗透通量则高达19.02L/(m2.h)。A hydrophilic negatively charged nanofiltration membrane was prepared by UV irradiation two-step graft polymerization of hydroxyethyl methacrylate（HEMA） and sodium styrene sulfonate（SSS） onto the surface of ultrafiltration membranes made of polyethersulfone（PES-C）.The effect of the irradiation time on the membrane performance was studied by measuring the salt retention through the membrane.The results show that the composite nanofilration has high retention and permeation flux to high valent anionic salts.The sodium sulfate of the membrane,which was grafted by HEMA for 120 s and then SSS for 15 minute,shows rentention beyond 95% and 19.02 L/（m2·h）.

关 键 词：紫外辐照接枝 酚酞基聚醚砜 荷电纳滤膜 甲基丙烯酸羟乙酯 苯乙烯磺酸钠 

分 类 号：TB383[一般工业技术—材料科学与工程]