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题名: Enhancing antifouling property of polysulfone ultrafiltration membrane by grafting zwitterionic copolymer via UV-initiated polymerization
作者: Yu, Haijun1, 2;  Cao, Yiming1;  Kang, Guodong1;  Liu, Jianhui1;  Li, Meng1;  Yuan, Quan1
关键词: Surface modification ;  UV-initiated grafting polymerization ;  Zwitterionic copolymer ;  Antifouling
刊名: JOURNAL OF MEMBRANE SCIENCE
发表日期: 2009-10-15
DOI: 10.1016/j.memsci.2009.05.041
卷: 342, 期:1-2, 页:6-13
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Engineering, Chemical ;  Polymer Science
研究领域[WOS]: Engineering ;  Polymer Science
英文摘要: A new kind of zwitterionic molecule, [3-(methacryloylamino)propyl]-dimethyl (3-sulfopropyl) ammonium hydroxide inner salt (MPDSAH) was grafted onto polysulfone (PSF) ultrafiltration membrane surface using benzophenone (BP) as the initiator to improve the antifouling property. Polymer chain scission was suppressed by H-abstraction from methyl groups under long-wavelength UV irradiation (lambda > 300 nm), which avoided the photodegradation of PSF ultrafiltration membrane. The effects of MPDSAH concentration, UV irradiation time and BP concentration on grafting degree (GD) and the improvement of membrane antifouling properties were investigated, respectively. Attenuated total reflectance Fourier transform infrared spectroscopy (FTIR/ATR) and scanning electron micrograph (SEM) were used to characterize the chemical and morphological changes of the membrane surface. Static contact angle (CA) measurements showed that the hydrophilicity of MPDSAH-modified PSF ultrafiltration membranes was enhanced with the increase of grafting degree. The flux of pure water decreased slightly after modification, while the rejection to bovine serum albumin (BSA) increased. The improvement of antifouling property for MPDSAH-modified membrane was accordant with the increase of grafting degree. In addition, compared to PSF membrane, the modified membranes could maintain a higher water flux in wide pH range. (c) 2009 Elsevier B.V. All rights reserved.
关键词[WOS]: POLYPROPYLENE MICROPOROUS MEMBRANES ;  LOW-TEMPERATURE PLASMA ;  SURFACE MODIFICATION ;  UF MEMBRANES ;  POLYETHERSULFONE ;  PERFORMANCE ;  ADSORPTION ;  MONOMER ;  FUNCTIONALIZATION ;  IMMOBILIZATION
语种: 英语
WOS记录号: WOS:000269678400002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141537
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Yu, Haijun,Cao, Yiming,Kang, Guodong,et al. Enhancing antifouling property of polysulfone ultrafiltration membrane by grafting zwitterionic copolymer via UV-initiated polymerization[J]. JOURNAL OF MEMBRANE SCIENCE,2009,342(1-2):6-13.
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