Membrane Science and Technology

Position：Home >> Abstract

Preparation of PDADMAC/PSS Nanofiltration Membrane by Layer-by –Layer Self-Assembly Technology

Authors： WANG Zongwen, SU Baowei, Gao Xueli, HAN Shanshan and GAO Congjie

Units： Key Laboratory of Marine Chemistry Theory and Technology , Ministry of Education; College of Chem & Chem.Eng, Ocean University of China, Qingdao China, 266100

KeyWords： layer-by-layer self-assembly; nanofiltration; charge property; separation performance; hydrophilic property

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2012, 32(1):27-32

Abstract：

Using negatively charged PES ultrafiltration membrane as substrate, multilayer PDADMAC/PSS polyelectrolytes nanofiltration membranes were prepared by layer-by-layer self-assembly technology. The membrane surface morphology, charging property, as well as the effect of concentration and types of the support electrolyte on the membrane performance were investigated. The results indicated that the prepared NF membrane surface was uniform and with no defect; the values of negative charge on membrane surface first gradually increase with the bi-layer number, and then gradually decrease with the bi-layer number, which demonstrate that there should be an optimal concentration of the support electrolyte. In addition, the performance of the (PDADMAC/PSS)5 NF membranes prepared in optimal conditions was evaluated. The results showed that under 1.0 MPa, the Na2SO4 (2 g/L) rejection was 93%, and corresponding the flux was up to 60 L/m2h; the NaCl rejection was only 9~13%, while the flux could reach 80 L/m2h. The prepared NF membrane could be completely used for the separation of univalent and bivalent salt solution system. The variation of contact angles reflect the alternative self-assembly of the polyelectrylytes. The prepared NF membranes with PSS as surface layer have excellent hydrophilic property.

Funds：

国家自然科学基金资助项目（编号：20976170）

AuthorIntro：

王宗文（1985~），山东济南人，硕士研究生，研究方向：纳滤膜分离技术。* 通讯联系人：苏保卫，subaowei@ouc.edu.cn

Reference：

[1 ] Jin Wanqin, Toutianoush A , Tieke B. Use of Polyelectrolyte Layer-by-Layer Assemblies as Nanofiltration and Reverse Osmosis Membranes [J]. Langmuir. 2003, 19: 2550-2553.
[ 2] A. El-Hashani, Ali Toutianoush, Bernd Tieke. Use of layer-by-layer assembled ultrathin membranes of dicopper-[18]azacrown-N6 complex and polyvinylsulfate for water desalination under nanofiltration conditions [J].Journal of Membrane Science.2008, 318:65–70.
[ 3] Hong S U , Malaisamy R , Bruening M L. Optimization of ?ux and selectivity in Cl−/SO42− separations with multilayer polyelectrolyte membranes [J]. Journal of Membrane Science, 2006,283: 366-372.
[4 ] Seong Uk Hong, Matthew D. Miller, and Merlin L. Bruening. Removal of Dyes, Sugars, and Amino Acids from NaCl Solutions Using Multilayer Polyelectrolyte Nanofiltration Membranes [J].Ind. Eng. Chem. Res. 2006, 45: 6284-6288.
[ 5] Ramamoorthy Malaisamy, Merlin L. Bruening. High-Flux Nanofiltration Membranes Prepared by Adsorption of Multilayer Polyelectrolyte Membranes on Polymeric Supports [J]. Langmuir. 2005, 21:10587-10592.
[6 ] Hui-Yu Deng, You-Yi Xu, Bao-Ku Zhu, et.al. Polyelectrolyte membranes prepared by dynamic self-assembly of poly (4-styrenesulfonic acid-co-maleic acid) sodium salt (PSS/MA) for nanofiltration (I) [J].Journal of Membrane Science. 2008,323: 125–133.
[ 7] 邓慧宇，朱宝库，徐又一等．PSS、PSS-co-MA/PAH动态自组装制备荷正电纳滤膜[J]．功能材料．2008，39（8）：1313-1317．
[ 8] 曹志源，方建慧，刘达等．PSS／PAH聚电解质复合纳滤膜制备及其性能研究[J]．功能材料.2007，38：2727-2703．
[ 9] 刘达，方建慧，曹志源等．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)．2008，14（4）：423-427．
[10 ] 徐又一，徐志康．高分子膜材料[M]．北京：化学工业出版社，2005．
[ 11] 沈家骢等. 超分子层结构-组装与功能[M]. 北京：科学出版社，2005：16.
[ 12] 金谷. 表面活性剂化学[M]. 合肥：中国科学技术大学出版社，2008：83.
[ 13] Maneesha Adusumilli, Merlin L.Bruening. Variation of Ion-Exchange Capacity ζ Potential, and Ion-Transport Selectivities with the Number of Layers in a Multilayer Polyelectrolyte Film [J]. Langmuir.2009, 25(13):7478–7485.
[ 14] Rashida N. Smith, Linda Reven, Christopher J. Barrett. 13C Solid-State NMR Study of Polyelectrolyte Multilayers [J].Macromolecules. 2003, 36: 1876-1881.

Service：

【Download】【Collect】

《膜科学与技术》编辑部 Address: Bluestar building, 19 east beisanhuan road, chaoyang district, Beijing; 100029 Postal code; Telephone：010-80492417/010-80485372; Fax：010-80485372 ; Email：mkxyjs@163.com