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CF4等离子体改性超疏水膜蒸馏膜材料

作者：杨迟¹， ²，谢应明¹，殷勇²，田苗苗² ，宋健峰²，李春霞²，孔丁峰²，李雪梅²，何涛²

单位： 1能源与动力学院上海理工大学，上海200093；2中国科学院上海高等研究院，上海201210

关键词：膜蒸馏，等离子体改性，超疏水，通量

DOI号：

分类号： TQ050.4; TQ028.8

出版年,卷(期):页码： 2014,34(5):4-8

摘要：

膜蒸馏用膜的疏水性是关系到出水品质和过程运行稳定性的关键。本文系统总结了本课题组采用CF4等离子体对现有的亲疏水膜材料进行疏水改性的研究进展，展示了CF4等离子体的改性机理、及疏水改性膜的直接接触式膜蒸馏过程的性能等；并对超疏水改性对膜性能影响的机理进行了探索，发现（超）疏水改性可提高膜蒸馏过程的有效蒸发面积，从而提高膜蒸馏过程的热效率和通量，为制备高性能新型蒸馏膜材料提供了新思路。

Hydrophobicity of the membrane is a key factor for the membrane distillation process that affects product water quality and operation stability. This paper summarized the research progress of our research group on CF4 plasma modification of hydrophilic (UF and MF) and hydrophobic membranes for direct contact membrane distillation (DCMD). The mechanism of CF4 plasma modification is illustrated as well as its impact on the performance and characteristics of originally hydrophilic and hydrophobic membranes. The effect of (super)hydrophobicity was proposed as it can increase the effective evaporation area and consequently increase the flux and energy efficiency in the DCMD process.

基金项目：

国家重大基础研究973项目 (No. 2009CB623402, 2012CB720903 )，自然科学基金项目(21176119, 51206114)，上海市博士后科研资助计划（项目编号13R21421600)，壳牌前沿研究基金。

作者简介：

杨迟（1988-），男，湖北宜昌人，硕士研究生，从事膜材料制备及应用研究。*通讯联系人：李雪梅Email: lixm@sari.ac.cn; 何涛Email: het@sari.ac.cn.

参考文献：

[1] El-Bourawi, M.S., et al., A framework for better understanding membrane distillation separation process [J]. Journal of Membrane Science, 2006. 285(1-2): p. 4-29.
[2] Alkhudhiri, A., N. Darwish, and N. Hilal, Membrane distillation: A comprehensive review[J]. Desalination, 2012. 287(0): p. 2-18.
[3] Khayet, M., Membranes and theoretical modeling of membrane distillation: A review[J]. Advances in Colloid and Interface Science, 2011. 164(1–2): p. 56-88.
[4] Wei, X., et al., CF4 plasma surface modification of asymmetric hydrophilic polyethersulfone membranes for direct contact membrane distillation[J]. Journal of Membrane Science, 2012. 407–408(0): p. 164-175.
[5] Li, X.M., et al., A sacrificial-layer approach to prepare microfiltration membranes. Journal of Membrane Science, 2008. 320(1-2): p. 1-7.
[6] Ji, Y., et al., Morphological control and cross-flow filtration of microfiltration membranes prepared via a sacrificial-layer approach[J]. Journal of Membrane Science, 2010. 353(1–2): p. 159-168.

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