膜科学与技术

氢键对纳滤膜截留率的影响

作者：张文娟，张宇峰，王翔

单位：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

关键词：纳滤，氢键，截留率，电荷密度

出版年,卷(期):页码： 2011,31(6):56-59

摘要：

纳滤膜与极性分子在形成氢键的过程中伴随着电子的传递现象，导致纳滤膜表面的电荷密度降低和荷电效应的减弱，从而引起截留率发生变化。本文从氢键出发，通过测试纳滤膜表面的电荷密度，探索氢键与截留率之间的关系。结果表明：随着对硝基苯酚浓度的增大，膜表面的电荷密度逐渐降低，即形成的氢键数目增多，截留率呈现下降的趋势。

Hydrogen bonds may form between polar organic molecules and polyamides on the surface of the nanofiltration membrane.This course is accompanied by electronic transport phenomena. As a result, electrostatic effect and charge density on the nanofiltration membrane surface get lower.And this causes rejection rates changed. The values of surface charge density with different concentration p-nitrophenol were measured to investigate the relationship between hydrogen bond and rejection. The results show that with the increase of concentration of p-nitrophenol surface charge density of the nanofiltration membrane reduced gradually and rejection got lower.

张文娟(1986～)，女，山东省泰安市人，硕士研究生，主要研究方向为膜材料与膜技术.E-mail：wenjuanvivian@126.com，Tel：15822677907。*通讯作者：张宇峰(1962～)，男，教授，博士生导师。E-mail：zyf9182@tjpu.edu.cn

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