Development of modified polymer ultrafiltration membrane

With the development of ultrafiltration membrane technology, people have a variety of new requirements for characteristics of polymer UF membrane, Among them, improving hydrophilicity and anti fouling capability of polymer UF membrane is the hot problem. Because single membrane material can't have simultaneously favorable hydrophilicity, membrane formation, thermal stability, chemical stability, acidityproof and alkalescenceproof, microbial erodent-resistant, oxidation-resistant, preferable mechanical intensity and so on, adopting material and surface modification methods is the key to solve the problem. In this paper, chemical and physical modification methods are introduced. Chemical modification can be realized by material and surface modification, while physical modification is mainly realized by material modification.