【作者】 曹志源； 方建慧； 刘达； 沈霞； 施利毅；

【Author】 CAO Zhi-yuan~1 FANG Jian-hui~(1,2) LIU Da~1 SHEN Xia~1 SHI Li-yi~(1,2) (1.Department of Chemistry,Shanghai 200444,China;2.Nano Science and Technology Research Center,Shanghai University,Shanghai 200444,China)

【机构】 上海大学理学院化学系；

【摘要】 采用 LbL 法在多孔 PES 基膜上制备了 PSS/PAH 聚电解质复合纳滤膜,利用 SEM 研究了复合膜的表面形貌,使用 ATR-IR 研究了复合膜在 PES 基膜上的生长规律,并研究了双层膜层数和组装时间对其离子截留性能的影响．研究表明,所制复合纳滤膜对不同的盐溶液的离子截留性能差异显著．如[PSS/PAH]₅膜对 1000mg/L 的 MgSO₄溶液的截留率可达90％,但对 1000mg/L 的 NaCl 溶液的截留率仅为33％,故可应用于水溶液中一、二价离子的分离．更多还原

【Abstract】 The polyelectrolyte multilayer PSS/PAH composite nanofiltration 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 factors of the number of bilayers and the self-assembly time as well as the ion rejection to the various brine solutions were investigated.The experimental results showed that the composite nanofiltration membranes show different salt rejection properties to different salt solutions.The salt rejection of [PSS/PAH]₅ to1000mg/L MgSO₄ and NaCl solutions were 90% and 33% respectively.These composite nanofiltration membranes favor separation of mono- and divalent ion.更多还原