【作者】 刘卫东； 张永华； 王灵辉； 朱宝库； 朱利平； 徐又一；

【Author】 Weidong LIU1,2,Yonghua ZHANG1,3,Linghui WANG1,Baoku ZHU1,2,Liping ZHU1,Youyi XU1 1Department of Polymer Science and Engineering,Key Laboratory of Macromolecule Synthesis and Fictionalization,Research Center of Membrane and Water Treatment Technology(Ministry of Education) ,Zhejiang University,Hangzhou,China,310027 2College of Chemistry and Life Science,Zhejiang Normal University,Jinhua,China,321004 3Zhejiang Xinna Medical Device Technology Co.,Ltd.,Yuhuan,China,317600

【机构】 浙江大学高分子科学与工程学系膜与水处理技术教育部工程研究中心高分子合成与功能构造教育部重点实验室； 浙江师范大学化学与生命科学学院； 浙江信纳医疗器械科技有限公司；

【摘要】 采用ATRP方法合成P(MMA-b-tBMA),水解得到两亲共聚物P(MMA-b-MAA),将此两亲共聚物与聚氯乙烯(PVC)共混,通过相转化法制备得到PVC多孔膜。用SEM对共混膜的结构进行了表征,并通过对水接触角、水渗透通量的测定表征了多孔膜的性能。研究发现随着两亲共聚物P(MMA-b-MAA)含量的提高,共混膜表面的水接触角下降,共混膜的亲水性得到提高,两亲共聚物可以较好地保留在共混膜中。同时共混膜表现出了较好的pH响应性。更多还原

【Abstract】 Amphiphilic block copolymer of poly(methyl methacrylate-b-methacrylic acid) (P(MMA-b-MAA)) was synthesized via the atom transfer radical polymerization technique followed by hydrolysis of tert-butyl groups. Using this copolymer as additive in casting solutions,the porous blend membranes of poly(vinyl chloride) (PVC) and P(MMA-b-MAA) were prepared following a typical non-solvent induced phase separation process. The influence of P(MMA-b-MAA) on the morphology of the blend membranes was observed by scanning electron microscopy(SEM) . Water contact angle and water flux experiment were used to evaluate the hydrophilicity and permeation property of the blend membranes. It was found that the P(MMA-b-MAA) copolymer could be retained in membrane stably. The copolymer could endow the blend membranes with efficient hydrophilicity and higher water permeation flux. More importantly,the pH sensitive property of blend membrane were found and discussed to certain degree.更多还原