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.

[1] Tessier L, Bouchard P, Rahni M. Separation and purification of benzylpenicillin produced by fermentation using coupled ultrafiltration and nanofiltration technologies[J]. J Biotechnol, 2005, 116(1): 79-89.
[2] Bowen W R, Cao X W. Electrokinetic effects in membrane pores and the determination of zeta-potential[J]. J Membr Sci, 1998, 140(2): 267-273.
[3] Bowen W R, Mohammad A W, Hilal N. Characterisation of nanofiltration membranes for predictive purposes-use of salts, uncharged solutes and atomic force microscopy[J]. J Membr Sci, 1997, 126(1): 91-105.
[4] 王刚, 王翔, 张宇峰, 等. 氢键作用对纳滤过程荷电效应的影响[J]. 材料科学与工程学报, 2009, 27(4): 610-612,504.
[5] Vellenga E, Tragardh G. Nano?ltration of combined salt and sugar solutions: coupling between retentions[J]. Desalination, 1998, 120 (3): 211-220.
[6] Matsubara Y, Iwasaki K, Nakajima M, et al. Recovery of oligosaccharides from steamed soybean waste water in tofu processing by reverse osmosis and nano?ltration membranes[J]. Biosci Biotechnol Biochem, 1996, 60 (3): 421-428.
[7] Hofman J A M, Noij T H M, Schippers J C. Removal of peptides and other organic micropollutants with membrane filtration[J]. Water Supply, 1993, 11 (3): 129-135.
[8] Kiso Y, Sugiura Y, Kitao T, et al. Effects on hydrophobicity and molecular size on rejection of aromatic pesticides with nanofiltration membranes[J]. J Membr Sci, 2001, 192(1-2): 1-10.
[9] Jiraratananon R, Sungpet A,  Luangsowan P. Performance evaluation of nano?ltration membranes for treatment of ef?uents containing reactive dye and salt[J]. Desalination, 2000, 130(2): 177-183.
[10] 陶氏膜产品与技术手册[M].陶氏化学公司,2006版
[11] 王建, 王晓琳. 聚丙烯腈超滤膜流动电位的测定[J]. 淮海工学院学报, 2002, 11(1): 38-41.