Research Progress in Hydrophilicity of Organic Membranes Grafted with Zwitterionic Polymers
Membrane fouling is a common problem in membrane separation.Zwitterionic polymers are representative materials containing anions and cationic units in the same molecule.Due to their super-hydrophilicity,chemical stability and excellent antifouling ability,it has received extensive attention in the fields of biomedicine and separation materials.In this paper,zwitterions were classified and the common methods to improve the anti-fouling performance of membrane by binding zwitterions to membrane surface are reviewed,including initiator initiation,plasma initiation and UV-induced initiation.Finally,the development of amphoteric ion modified polymer membrane was simply evaluated and prospected.
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