将普通纳米SiO2、疏水纳米SiO2、亲水纳米SiO2分别加入到聚偏氟乙烯（PVDF）铸膜液中，通过相转化法制得PVDF /SiO2杂化超滤膜，重点探讨了SiO2加入量及上述三种类型纳米SiO2对PVDF杂化超滤膜水通量、截留率和抗污染性能的影响。结果表明膜的孔隙率、平均孔径、水通量、截留率和抗污染性随SiO2含量增加而先增大后减少； SiO2含量为2%时，膜水通量由大至小为：普通纳米SiO2杂化膜、疏水纳米SiO2杂化膜、亲水纳米SiO2杂化膜，抗污染性由大至小为：亲水纳米SiO2杂化膜、普通纳米SiO2杂化膜、疏水纳米SiO2杂化膜。

The unmodified, hydrophilic and hydrophobic nano-sized SiO2 were added into the PVDF casting solution respectively, and the PVDF/SiO2 hybrid membranes were prepared by phase inversion method. The effects of SiO2 concentration and the above-mentioned three types of SiO2 on the PVDF membrane performances such as pure water flux, rejection ratio, anti -fouling capability were examined. The experimental results indicated that membrane porosity, mean membrane pore size, pure water flux, rejection ration, anti-fouling capability increased with rising SiO2 concentration firstly and then decreased. Besides, when the SiO2 concentration was 2%,  in terms of pure water flux, unmodified nano-sized SiO2 hybrid membrane was the best, followed by hydrophobic nano-sized SiO2 hybrid membrane and hydrophilic nano-sized SiO2 hybrid membrane。Inversely, in terms of anti-fouling capability, hydrophilic nano-sized SiO2 hybrid membrane was the optimal, followed by unmodified nano-sized SiO2 hybrid membrane and hydrophobic nano-sized SiO2 hybrid membrane.

[1] Young T H, Chang H H, Lin D J, et al. Surface modification of microporous PVDF membranes for neuron culture [J]. J Membr Sci, 2010, 350:32-41.
[2] Yang Xuanxuan, Deng Bo, Lin Zhongying, et al. Microfiltration membranes prepared from acryl amide grafted poly (vinylidene fluoride) powder and their pH sensitive behaviour[J]. J Membr Sci, 2010, 362 : 298-305.
[3] Mu Chunxia, Su Yanlei, Sun Mengmeng, et al. Remarkable improvement of the performance of poly (vinylidene fluoride) microfiltration membranes by the additive cellulose acetate [J]. J Membr Sci, 2010, 350: 293-300.
[4] Wu Lishun, Sun Junfen, Wang Qingrui. Poly (vinylidene fluoride) / Polyethersulfone blend memebranes: effects of solvent sort, polyethersulfone and polyvinylpyrrolidone concentration on their properties and morphology [J]. J Membr Sci, 2006, 285: 290-298.
[5] Qian Li, Xu Zhenliang, Yu Liyun. Effects of mixed solvents and PVDF types on performances of PVDF microporous membranes [J]. J Appl Polyme Sci, 2010, 115: 2277-2287.
[6] Lu Yan, Sun Hong, Li Mengli, et al. Application of the Al2O3-PVDF nanocomposite tubular ultrafiltration (UF) membrane for oily wastewater treatment and its antifouling research [J]. Separation and Purification Technology, 2009, 66: 347-352.
[7] Cui Aillua, Liu Zhen, Xiao Chengfa, et al. Effect of micro-sized SiO2-particle on the performance of PVDF blend membranes via TIPS [J]. J Membr Sci, 2010, 36 (1): 259-264.
[8] 陈娜，彭跃莲，纪树兰. SiO2对PVDF超滤膜性能的影响[J] . 膜科学与技术，2007，27（3）：21-24.
[9] 沈惠玲，廖桦，肖长发.添加剂PEG对PVDF/ SiO2杂化膜性能的影响[J].膜科学与技术，2010，30（1）：65-68.
[10] 张裕卿，张红柳，曲云.填充纳米SiO2对聚偏氟乙烯膜性能的影响[J].膜科学与技术，2007，27（6）：47-51.