聚偏氟乙烯膜亲水改性研究进展

发布时间：2018-01-18 08:14

本文关键词：聚偏氟乙烯膜亲水改性研究进展　出处：《化工进展》2016年08期 　论文类型：期刊论文

【摘要】：聚偏氟乙烯以其优异的力学性能和化学性能被广泛用于制备微滤膜、超滤膜、纳滤膜和反渗透膜等水处理膜材料,然而由于其极强的疏水性,使其在用于水处理过程中存在通量低和容易被污染等缺陷,这极大地降低了水处理效率和薄膜的使用寿命,因此对其亲水改性具有重要的实际意义。本文根据改性方法的异同,将近几年来国内外对聚偏氟乙烯膜的亲水化改性研究工作按共混改性、共聚改性、表面接枝改性和表面涂覆改性等方法进行了综述,通过不同改性方法对聚偏氟乙烯水处理膜的亲水效果、渗透能力和防污染性等方面的影响,着重比较讨论了各种改性方法的改性效果及优缺点。最后对未来聚偏氟乙烯膜的亲水改性研究及工业化应用的发展趋势进行了展望。
[Abstract]:Polyvinylidene fluoride (PVDF) has been widely used in the preparation of microfiltration membrane, ultrafiltration membrane, nanofiltration membrane and reverse osmosis membrane for its excellent mechanical and chemical properties. However, because of its strong hydrophobicity. It has the defects of low flux and easy to be polluted in the process of water treatment, which greatly reduces the efficiency of water treatment and the service life of film. Therefore, the hydrophilic modification has important practical significance. According to the similarities and differences of modification methods, the hydrophilic modification of polyvinylidene fluoride membrane has been studied by blending modification and copolymerization modification at home and abroad in recent years. The methods of surface grafting modification and surface coating modification were reviewed. The effects of different modification methods on the hydrophilic effect, permeability and anti-fouling ability of PVDF water treatment membrane were discussed. The modification effect, advantages and disadvantages of various modification methods were emphatically discussed. Finally, the development trend of hydrophilic modification and industrial application of PVDF membrane in the future was prospected.
【作者单位】：武汉理工大学材料科学与工程学院;
【基金】：青年骨干教师出国研修项目(201306955022)
【分类号】：TQ051.893
【正文快照】：

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