PVDF超滤膜相转化制备方法及其改性的研究进展

Research progress in PVDF Ultrafiltration Membranes Prepared by phase Inversion Method and Their Modifications

主要综述了聚偏氟乙烯(PVDF)超滤膜在相转化制备方法和改性两个方面的最新研究进展。在相转化制备方法中,重点介绍了溶剂和非溶剂的选择对膜孔结构的影响;在PVDF超滤膜改性方面,从膜本体和膜表面两个角度进行了介绍,本体改性包括共混改性和共聚改性,表面改性包括辐照接枝改性和低温等离子体改性,共混改性是今后改性的主要发展方向。并结合国内外相关文献,简要介绍了PVDF超滤膜作为一种新技术在水处理中的应用。

The newly research progress of poly （vinylidene） fluoride （PVDF） membrane in preparation and modification is reviewed. The researeh focuses on the effects of solvents and non-sulvents on the pore and structure of PVDF membranes by phase inversion. The modification methods of PVDF uhrafiltration membranes including substance modification and surface modification are introduced. The substance modification method includ- ed physical blending and copolymerization, the surface modification included radiation induced grafting and low-temperature plasma. It was evident that physical blending was the main trend of modification of PVDF uhrafiltration membrane. The PVDF uhrafihrafion membrane as a new technique in water treatment application is introduced briefly.