两性离子聚合物的制备性能及在抗污染分离膜中应用的研究现状

Preparation,Characterization and Application in Antifouling Membrane of Zwitterionic Polymers

两性离子聚合物分子链中含有等量阴、阳离子基团,呈现"反聚电解质效应",具有良好的热、化学稳定性,亲水性,生物相容性以及优异的抗污染等性能,被广泛应用于石油化工、医疗器械、分离材料等领域。文中在简要介绍两性离子聚合物的制备方法及性能的基础上,着重阐述了近年来为提高分离膜抗污染性引入两性离子聚合物的方法,包括表面接枝、表面偏析、化学气相沉积、仿生黏附及界面聚合等,并对今后研究方向提出建议。

Zwitterionic polymers possessing both anionic and cationic groups in the same molecular chain show antipolyelectrolyte effect.Owing to its excellent thermal and chemical stability,hydrophilic,biocompatibility and superior antifouling properties,it was broadly utilized in the areas as petrochemical,medical equipment,separation materials and so on.In this review,the preparation and performances of zwitterionic polymers were discussed,then the approaches to incorporate the zwitterionic polymers into the separation membranes to improve their antifouling performances in recent years were emphatically elaborated,including surface grafting,surface segregation,chemical vapor deposition,biomimetic adhesion and interfacial polymerization and so on.The suggestions for future research directions were also presented in this review.