膜科学与技术

疏水膜在十二烷基苯磺酸钠溶液中的浸润研究

作者：崔丽云，丁忠伟，刘丽英

单位：北京化工大学化学工程学院

关键词：聚偏氟乙烯；聚四氟乙烯；十二烷基苯磺酸钠；膜润湿

出版年,卷(期):页码： 2014,34(2):51-55

摘要：

本文分别将聚偏氟乙烯（PVDF）和聚四氟乙烯（PTFE）平板膜浸润到十二烷基苯磺酸钠（SDBS）水溶液中通过测量膜的重量随时间的变化进行膜浸润的研究，同时考察了膜材料，活性剂溶液的浓度和温度对微孔膜润湿的影响。实验结果表明：PTFE膜的润湿速率远低于PVDF膜的；增大溶液的浓度或升高温度在相同润湿时间处的膜孔浸润百分率增大。基于毛细管渗入机理和膜孔径对数正态分布函数，我们提出了微孔膜的润湿百分率与时间的理论方程，并且对PVDF膜的润湿实验数据进行了拟合，得到了较好的拟合效果。

In this work, we studied the polyvinylidene fluoride (PVDF) and polytetrafluoroethylene (PTFE) membrane wetting in sodium dodecyl benzene sulfonate (SDBS) solution by measuring the membrane gain weight over wetting time. We considered the influencing factors of the membrane material, concentration of SDBS and temperature. The experimental results indicate that, PTFE membrane wetting rate is much lower than that of PVDF membrane; increasing the solution concentration or rising temperature could accelerate the membrane invasion. Based on capillary imbibitions mechanism and membrane pores distribution, we put forward a membrane wetting theory equation about wetting ratio and time, and simulated successfully the PVDF membrane wetting results by this equation.

崔丽云(1987-)，女，山东人，博士生，主要从事膜分离方向研究；*通讯联系人E-mail：dingzw@ mail.buct.edu.cn

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