PES基膜表面PSS/PDADMAC多层膜的构筑及其离子截留性能

上海大学学报(自然科学版)

PES基膜表面PSS/PDADMAC多层膜的构筑及其离子截留性能

刘达1，方建慧1，2，曹志源1，沈霞1，施利毅1，2

1.上海大学理学院,上海 200444；2.上海大学纳米科学与技术研究中心，上海 200444

收稿日期:2007-04-09 修回日期:1900-01-01 出版日期:2008-08-27 发布日期:2008-08-27
通讯作者: 方建慧

Deposition of Multilayer Polyelectrolyte Membranes on PES Supports and the Ion Rejection

LIU Da1,FANG Jian-hui1,2,CAO Zhi-yuan1,SHEN Xia1,SHI Li-yi1,2

1. College of Sciences, Shanghai University, Shanghai 200444, China;
2. Nano Science and Technology Research Center, Shanghai University, Shanghai 200444, China

Received:2007-04-09 Revised:1900-01-01 Online:2008-08-27 Published:2008-08-27
Contact: FANG Jian-hui

摘要/Abstract

摘要： 在多孔PES基膜上制备了PSS/PDADMAC聚电解质多层膜，并研究其离子截留性能.使用ATR-IR研究聚电解质多层膜在PES基膜上的生长规律，并利用SEM研究聚电解质多层膜的表面形貌.研究表明，所制聚电解质多层膜性能稳定性较好，对不同的盐溶液均具有离子截留性能，但差异显著.如所制［PSS/PDADMAC］₅PSS膜对 1 000 mg/L的MgSO₄溶液的截留率为91%，对1 000 mg/L的NaCl溶液的截留率为13%，故可应用于水溶液中一、二价离子的
分离.

关键词: 层层交替自组装, 聚电解质多层膜, 离子截留性能

Abstract: The polyelectrolyte multilayer PSS/PDADMAC membranes were prepared by alternating layer-by-layer deposition of cationic and anionic polyelectrolyte on the porous PES supporting membrane and characterized by ATR-IR spectrometry and SEM. The ion rejection of various brine solutions was investigated. Experimental results show that the polyelectrolyte multilayer membranes have different salt rejection behaviors for different salt solutions. For example,［PSS/PDADMAC］₅PSS membranes show that the salt rejection of two salt solutions (1 000 mg/L MgSO₄ and NaCl) were 91% and 13%respectively. Those multilayer polyelectrolyte membranes are excellently suited for separation of univalent ion and divalent ion.

Key words: ion rejection, polyelectrolyte multilayers, layer by layer

中图分类号:

TQ 028.8

刘达;方建慧;曹志源;沈霞;施利毅;. PES基膜表面PSS/PDADMAC多层膜的构筑及其离子截留性能[J]. 上海大学学报(自然科学版).

LIU Da;FANG Jian-hui;CAO Zhi-yuan;SHEN Xia;SHI Li-yi;. Deposition of Multilayer Polyelectrolyte Membranes on PES Supports and the Ion Rejection[J]. Journal of Shanghai University（Natural Science Edition）.