磺化TA/CS复合纳滤膜的制备及性能研究  

Preparation and performance study of sulfonated TA/CS composite nanofiltration membrane

作　　者：杜林 秦秋毫 何健 洪耀良 Du Lin;Qin Qiuhao;He Jian;Hong Yaoliang(Suzhou University of Science and Technology,Suzhou 215009,China)

机构地区：[1]苏州科技大学,江苏苏州215009

出　　处：《工业水处理》2021年第9期123-128,共6页Industrial Water Treatment

摘　　要：利用Fe3+的配位作用使单宁酸(TA)/壳聚糖(CS)胶体粒子在改性聚丙烯腈(PAN)超滤膜的表层快速共沉积,然后在其表面上与均苯三甲酰氯(TMC)进行界面聚合,制备了复合纳滤膜。在水相中添加2,4-二氨基苯磺酸(2,4-DABSA),考察引入磺酸基团后复合膜的过滤及抗污染性能。结果表明,磺化TA/CS复合膜对Na2SO4和MgSO4的截留率分别达到96.21%和90.35%,并且在0.1 g/L腐殖酸、牛血清白蛋白环境下过滤24 h后均具有优异的通量恢复率。Fe3+coordination was used to promote the rapid co-deposition of tannic acid/chitosan colloidal particles on the surface of the modified PAN ultrafiltration membrane.And then on its surface a composite nanofiltration mem-brane was prepared by interfacial polymerization with trimesoyl chloride(TMC).2,4-diaminobenzenesulfonic acid(2,4-DABSA)was added to the water phase to study the filtration and anti-fouling performance of the composite membrane after introducing sulfonic acid groups.The results showed that sulfonated TA/CS composite membrane had a retention rate of 96.21%and 90.35%for Na2SO4 and MgSO4,and it had excellent flux recovery rate after filtering under 0.1 g/L humic acid and bovine serum albumin for 24 h.

关 键 词：复合纳滤膜 单宁酸 壳聚糖 磺酸基团 

分 类 号：TQ051.893[化学工程]