聚偏氟乙烯以其优异的力学性质和化学性质在膜分离技术中被广泛应用,其表面的极强疏水性,导致在水处理过程中极易受到污染且恢复率很低.所以膜的改善亲水性具有十分重要的意义.根据不同的改性粒子分类,结合主要的改性方法,将国内外近几年对PVDF改性效果较好的纳米粒子和两亲性共聚物进行综述和性能对比,着重从渗透性和抗污性比较了各种粒子的改性效果.最后对PVDF膜亲水性改善进行总结和展望.%PVDF membrane with excellent mechanical properties and chemical properties is widely used in membrane separation technology. Because of high hydrophobicity of the surface, PVDF membrane is easily polluted in the water treatment process and the recovery rate is very low. So improving the hydrophilicity of the membrane is of great significance. In this paper, according to different modification particles and main modification methods, properties of nano-particles and amphiphilic copolymers with good modification effect on PVDF in recent years were summarized and compared, and modification effect of different particles was analyzed from the aspects of the permeability and anti-fouling property. Finally, the improvement of hydrophilicity of PVDF membrane was summarized and forecasted.
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