丝朊上接枝聚丙烯腈和聚丙烯酰胺复合过滤膜的性能  

Properties of composite filtration membrane from silk fibroin grafted by polyacrylonitrile and polyacrylamide

作　　者：赵雨薇 杨红 赵孔银[1,2] 厍景国 李金刚 刘亚[2] 魏俊富[1] ZHAO Yuwei;YANG Hong;ZHAO Kongyin;SHE Jingguo;LI Jingang;LIU Ya;WEI Junfu(State Key Laboratory of separation membranes and membrane processes,Tianjin Polytechnic University,Tianjin 300387,China;School of Material Science and Engineering,Tianjin Polytechnic University,Tianjin 300387,China)

机构地区：[1]天津工业大学分离膜与膜过程国家重点实验室,天津300387 [2]天津工业大学纺织学院,天津300387

出　　处：《复合材料学报》2019年第7期1601-1606,共6页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(21304037;51708407);天津市应用基础与前沿技术研究计划(16JCZDJC37500;17JCQNJC08700;18JCYBJC18100);大学生创新创业训练计划(201710058020;201710058069);天津市高等学校创新团队培养计划(TD13-5042)

摘　　要：以高浓度ZnCl2水溶液为溶剂,采用氧化-还原引发体系,在丝朊(SF)上接枝丙烯腈(AN)和丙烯酰胺(AM)得到铸膜液,以水为凝固浴制备SF上接枝聚丙烯腈-聚丙烯酰胺(SF-g-P(AN-co-AM))复合过滤膜。通过SEM、TG和水接触角对SF-g-P(AN-co-AM)复合过滤膜进行表征,研究了其力学性能、分离性能和抗污染性能。结果表明,随着AM添加量的增加,SF-g-P(AN-co-AM)过滤膜的断裂强度逐渐增加,通量逐渐减少。当AM用量为0.5g时,SF-g-P(AN-co-AM)复合过滤膜的断裂强度达到1.4 MPa,在0.1 MPa压力下,水通量为35L/(m2·h)。该过滤膜具有良好的分离性能,对0.03g/L刚果红(Mw=696.68)溶液的截留率达到99%。SF-g-P(AN-co-AM)复合过滤膜具有良好的抗污染性能,未经清洗条件下,三次纯水和牛血清白蛋白溶液循环过滤后,通量恢复率还能达到94.4%。The silk graft polyacrylonitrile-polyacrylamide (SF-g-P(AN-co-AM)) composite filtration membrane was produced using zinc chloride aqueous solution as the solvent and using water as the coagulation bath. The SF-g-P(AN-co-AM) composite filtration membrane was characterized by SEM, TG analysis and water contact angle. The mechanical properties, separation performance and anti-fouling performance of the SF-g-P(AN-co-AM) membrane were tested. The results show that the fracture strength of the SF-g-P(AN-co-AM) membrane increases with the increasing of the acrylamide content, but the flux decreaseds. When 0.5 g of acrylamide is used, the fracture strength of the SF-g-P(AN-co-AM) membrane reaches 1.4 MPa. The SF-g-P(AN-co-AM) membrane has good separation performance, when the water flux is 35 L/(m2h) under 0.1 MPa pressure and the rejection rate of 0.03 g/L Congo red (Mw=696.68) solution reaches 99%. The SF-g-P(AN-co-AM) membrane exhibits good anti-fouling performance, and the flux recovery rate is 94.4% after three cycles of pure water and bovine serum albumin solution filtration without cleaning.

关 键 词：丝朊 聚丙烯腈 聚丙烯酰胺 复合过滤膜 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ319[化学工程—高聚物工业]