| PVDF/TiO_2复合平板超滤膜的制备与性能研究 |
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| 引用本文： | 王斯维,文晨,朱愉洁,肖长发.PVDF/TiO_2复合平板超滤膜的制备与性能研究[J].天津工业大学学报,2010,29(5). |
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| 作者姓名： | 王斯维 文晨 朱愉洁 肖长发 |
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| 作者单位： | 1. 天津工业大学,环境与化学工程学院,天津,300160
2. 天津工业大学,中空纤维膜材料与膜过程教育部重点实验室,天津,300160 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)项目 |
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| 摘 要： | 采用自制纳米TiO2溶胶、商品化纳米TiO2粒子溶胶表面涂覆PVDF膜制得PVDF/TiO2复合膜.通过纯水通量、截留率、接触角以及抗污染性能等实验,考察了不同粒径、浓度的纳米TiO2溶胶对PVDF膜性能的影响,并利用FT-IR和SEM表征了该复合膜的微观构造.结果表明:复合膜的分离性能得到提高,且自制纳米TiO2溶胶改性的PVDF膜综合性能较优异,其接触角由改性前的85.0°降至46.0°,并且去离子水清洗50min后,通量恢复率稳定在95%以上;FT-IR分析显示,复合膜表面羟基数有所增加;SEM观察表明,在PVDF膜表面镶嵌和吸附有一定量纳米TiO2粒子使复合膜呈现出良好的抗污染性能.
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| 关 键 词： | 聚偏氟乙烯膜 TiO2溶胶 复合平板超滤膜 有机-无机复合膜 表面改性 抗污染 |
Preparation and performance researches on PVDF/TiO2 composite ultrafiltration flat membrane |
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| WANG Si-wei,WEN Chen,ZHU Yu-jie,XIAO Chang-fa.Preparation and performance researches on PVDF/TiO2 composite ultrafiltration flat membrane[J].Journal of Tianjin Polytechnic University,2010,29(5). |
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| Authors: | WANG Si-wei WEN Chen ZHU Yu-jie XIAO Chang-fa |
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| Affiliation: | WANG Si-wei1,WEN Chen1,ZHU Yu-jie1,XIAO Chang-fa2(1.School of Environmental and Chemical Engineering,Tianjin Polytechnic University,Tianjin 300160,China,2.Key Laboratory of Hollow Fiber Membrane Materials and Membrane Processes of Ministry of Education,China) |
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| Abstract: | A PVDF/TiO2 composite membrane was prepared by coating the membrane surface with TiO2 sol and novel TiO2 solution.By some experiments such as flux,retention rate,contact angle and anti-fouling properties,the effects of varying size and concentration of TiO2 sol and TiO2 solution coating on the PVDF/TiO2 composite membrane were studied,and the structure and micromorphology were characterized by FT-IR and SEM re-spectively.The results indicate that the separation performance of the PVDF/TiO2 composite membran... |
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| Keywords: | poly(vinylidene fluoride)(PVDF)membrane TiO2 sol composite ultrafiltration flat membrane organic-inorganic composite membrane surface modification anti-fouling |
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