膜科学与技术

纳米硅乳液改性聚丙烯/二氧化钛超疏水-自清洁共混疏水微孔膜的研究

作者：韩怀远¹，²，张蕾¹，²，冯春磊¹，²，项军¹，²，程鹏高¹，²，唐娜¹，²

单位： 1. 天津科技大学化工与材料学院，天津 300457； 2. 天津市海洋资源与化学重点实验室，天津 300457

关键词：等规聚丙烯；纳米二氧化钛；纳米硅乳液；超疏水改性；膜蒸馏

出版年,卷(期):页码： 2016,36(3):41-47

摘要：

采用浸没法对实验室自制的等规聚丙烯（iPP）/纳米TiO2粒子共混微孔平板膜进行表面改性，探讨了纳米硅乳液浓度和反应温度等条件对改性膜的形态结构以及疏水性的影响，得到了纳米硅乳液改性iPP/TiO2超疏水微孔膜制备的最佳条件,最后测试了纳米硅乳液改性iPP/TiO2超疏水微孔膜的自清洁性能、pH稳定性以及VMD稳定性。研究结果表明：确定纳米硅乳液改性iPP/TiO2超疏水-自清洁微孔膜制备的最佳条件为：UV光催化30min，纳米硅乳液浓度为20wt%，反应温度为室温，最后置于80°C烘箱烘干2h。此时制备的纳米硅乳液改性iPP/TiO2超疏水微孔膜接触角达到153.2°，滚动角小于10°，并且具有优异的自清洁和pH稳定性能、VMD稳定性以及抗润湿和抗污染性能。

The lab-made isotactic polypropylene/ nano TiO2 particle co-blending microporous membrane was modified by immersion method. The effect of nanometre silicone emulsion concentration and reaction temperature on the morphological structure and hydrophobicity of the modified membranes was discussed. Then, the best preparation condition of the nanometre silicone emulsion modified iPP/TiO2 superhydrophobic membrane was obtained. Finally, the determination of self-cleaning property, pH and VMD stabilities of nanometre silicone emulsion modified iPP/TiO2 superhydrophobic membrane was carried out. The result showed that the best preparation condition of the nanometre silicone emulsion modified iPP/TiO2 superhydrophobic membrane was UV photocatalysis was 30min, the concentration of nanometre silicone emulsion was 20wt%, reaction temperature was room temperature, and the drying time was 2h under 80°C. On this condition, the contact angle of modified membrane was reached 153.2°, and the rolling angle was less than 10°. The nanometre silicone emulsion modified iPP/TiO2 superhydrophobic membranes had an excellent self-cleaning property, pH stability, VMD stability, anti-pollution capacity and anti- wetting capacity.

第一作者简介：韩怀远（1986-），男，河南郑州人，博士生。主要研究方向：热致相分离制膜及膜分离技术。（alexhanhuaiyuan@163.com）通讯作者：唐娜（1972-），女，辽宁海城市人，博士，教授，博士研究生导师。主要研究方向：膜分离、海卤水资源综合利用．（tjtangna@tust.edu.cn）

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