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化学学报
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化学学报 ›› 2006, Vol. 64 ›› Issue (6): 569-573. 上一篇    下一篇

研究论文

溶胶-凝胶法制备聚砜/二氧化钛有机-无机杂化超滤膜

杨亚楠，王鹏*，郑庆柱   

  1. (1哈尔滨工业大学市政环境工程学院绿色化学与技术研究中心 哈尔滨 150090)
    (2长春工业大学 长春 130012)
  • 投稿日期:2005-07-21 修回日期:2005-11-16 发布日期:2006-03-28
  • 通讯作者: 王鹏

Polysulfone/TiO2 Hybrid Ultrafiltration Membrane Prepared by The Sol-Gel Process

YANG Ya-Nan, WANG Peng*, ZHENG Qing-Zhu   

  1. (1 Research Center for Green Chemistry and Technology, School of Municipal and Environmental Engineering,
    Harbin Institute of Technology, Harbin 150090)
    (2 Changchun University of Technology, Changchun 130012)
  • Received:2005-07-21 Revised:2005-11-16 Published:2006-03-28
  • Contact: WANG Peng

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采用溶胶-凝胶法制备了不同TiO2含量的PSF/TiO2杂化超滤膜, 并通过SEM, XRD TG/DTA, 超滤实验, 机械性能测试, 水接触角测试等手段对膜的结构和性能进行了表征. 结果表明: 当TiO2的质量分数为9.3%时, 膜亚层的指状孔消失, 形成了以纳米TiO2颗粒为交联点的网络状孔, 同时膜的亲水性、机械性能和热稳定性都有明显的改善, 并在截留滤基本保持不变的情况下, 水通量明显提高. 但过高的TiO2含量(w≥11.9%)会产生严重的纳米颗粒团聚现象而造成膜的各项性能指标下降.

关键词: 溶胶-凝胶, 聚砜, 二氧化钛, 杂化膜, 亲水性

Polysulfone (PSF)/TiO2 hybrid ultrafiltration (UF) membranes with different TiO2 content were prepared by sol-gel method. The microstructure and the performances of such PSF/TiO2 membrane were investigated through the methods of SEM, XRD, TG/DTA, contact angle goniometer, UF experiments and mechanical strength tests. The results showed that at w(TiO2)＝9.3%, the macrovoids of PSF/TiO2 membranes disappeared, a network structure by bond conjunction between TiO2 particles and PSF/PVP macromolecules was formed, the hydrophilicity, mechanical strength and thermal stability of the membranes were all improved, and the permeability was increased drastically combining with retention unchanged. However higher TiO2 content (w≥11.9%) caused a serious nanoparticle aggregation to result in the performance decline of PSF/TiO2 membranes.

Key words: sol-gel, polysulphone, TiO2, hybrid membrane, hydrophilicity