膜科学与技术

Position：Home >> Abstract

Preparation and characterization of pressure-resistant polysulfone-based amphiphilic block copolymer ultrafiltration membranes

Authors： CHEN Wei, WANG Zhaogen, WANG Yong

Units： State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, China

KeyWords： block copolymers; polysulfone; ultrafiltration membranes; sponge-like pores; pressure resistance

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2018,38(6):27-33

Abstract：

Polysulfone membranes are widely used as ultrafiltration membranes and the support layers for composite membranes. However, due to the strong hydrophobicity of the material itself, polysulfone ultrafiltration membranes need some modifications to enhance the penetration and anti-fouling performance. We have prepared permanently hydrophilic ultrafiltration membranes with finger-like pores by using amphiphilic block copolymer polysulfone-block-polyethylene glycol (PSF-b-PEG). In this paper, we try to prepare sponge-like membranes with the same material by changing solvent/nonsolvent system and the concentration of polymer solution. The results showed that when N,N-dimethylformamide (DMF) was used as solvent and deionized water was used as nonsolvent, a PSF-b-PEG ultrafiltration membrane with sponge-like structure could be directly prepared. The pure water permeability of the membrane reached 160 L·m-2·h-1·bar-1 and the rejection of bovine serum albumin (BSA) reached 90% under the concentration of 25%. The pressure-resistance test showed that the membranes with sponge-like structure have superior pressure resistance compared with the finger-like membranes.

Funds：

国家重点基础研究发展计划项目（2015CB655301）；国家自然科学基金项目（21776126）；江苏省自然科学基金项目（BK20150063）；江苏高校优势学科建设工程（PAPD）

AuthorIntro：

第一作者简介：陈威（1993-），男，江苏淮安人，工学硕士，从事膜分离材料的研究与应用。 *通讯作者，E-mail：wangzhaogen@njtech.edu.cn; yongwang@njtech.edu.cn

Reference：

[1] 俞三传, 金可勇, 高从堦. 高性能聚砜支撑膜研制[J]. 膜科学与技术, 1999, 19(6): 45-47.
[2] Rana D, Matsuura T. Surface modifications for antifouling membranes [J]. Chem Rev, 2010, 110(1-2): 2448-2471.
[3] Chen W, Wei M J, Wang Y. Advanced ultrafiltration membranes by leveraging microphase separation in macrophase separation of amphiphilic polysulfone block copolymers [J]. J Membr Sci, 2017, 525: 342-348.
[4] Jonsson G. Methods for determining the selectivity of reverse osmosis membranes [J]. Desalination, 1978, 24: 19-37.
[5] Ohya H. An expression method of compaction effects on reverse osmosis membranes at high pressure operation [J]. Desalination, 1978, 26: 163-174.
[6] Aerts P, Greenberg A R, Leysen R, et al. The influence of filler concentration on the compaction and filtration properties of Zirfon®-composite ultrafiltration membranes [J]. Sep Sci Technol, 2001, 22-23: 663-669.
[7] Yoo S H, Kim J H, Jho J Y, et al. Influence of the addition of PVP on the morphology of asymmetric polyimide phase inversion membranes: effect of PVP molecular weight [J]. J Membr Sci, 2004, 236: 203-207.
[8] Saljoughi E, Amirilargani M, Mohammadi T. Effect of poly(vinyl pyrrolidone) concentration and coagulation bath temperature on the morphology, permeability, and thermal stability of asymmetric cellulose acetate membranes [J]. J Appl Polym Sci, 2009, 111: 2537-2544.
[9] Persson K M, Gekas V, Tragardh G. Study of membrane compaction and its influence on ultrafiltration water permeability [J]. J Membr Sci, 1995, 100: 155-162.
[10] Mulder M著, 李琳译, 膜技术基本原理 2nd [M]// 北京: 清华大学出版社, 1999: 82.
[11] Strathmann H, Kock K. The formation mechanism of phase inversion membranes [J]. Desalination, 1977, 21: 241-255.
[12] Zhang Z H, An Q F, Liu T, et al. Fabrication of polysulfone ultrafiltration membranes of a density gradient cross section with good anti-pressure stability and relatively high water flux [J]. Desalination, 2011, 269: 239-248.
[13] Yu L, Yang F, Xiang M. Phase separation in a PSf/DMF/water system: a proposed mechanism for macrovoid formation [J]. RSC Adv, 2014, 4: 42391-42402.
[14] Kim J H, Lee K H. Effect of PEG additive on membrane formation by phase inversion [J]. J Membr Sci, 1998, 138: 153-163.
[15] 李峰, 安全福, 高从堦等. 聚砜超滤膜结构对铸膜溶液性质的依赖性[J]. 水处理技术，2009, 35(3): 23-26.
[16] 严昊, 徐建, 刘轶群等. 不同结构聚砜超滤膜对聚乙二醇的过滤性能研究[J]. 膜科学与技术, 2013, 33(5): 43-47.

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