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题名: Preparation and performance of cellulose acetate/polyethyleneimine blend microfiltration membranes and their applications
作者: Chen, ZA;  Deng, MC;  Yong, C;  He, GH;  Ming, W;  Wang, JD
关键词: polyethyleneimine ;  blend membrane ;  crosslink ;  surface modification ;  adsorptive membrane
刊名: JOURNAL OF MEMBRANE SCIENCE
发表日期: 2004-06-01
DOI: 10.1016/j.memsci.2004.01.024
卷: 235, 期:1-2, 页:73-86
收录类别: SCI
文章类型: Article
项目归属: 天邦公司
产权排名: 1;1
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 modified microfiltration membrane has been prepared by blending a matrix polymer with a functional polymer. Cellulose acetate (CA) was blended with polyethyleneimine (PEI), which was then crosslinked by polyisocyanate, in a mixture of solvents. In the membrane, PEI can supply coupling sites for ligands in affinity separation or be used as ligands for metal chelating, removal of endotoxin or ion exchange. The effects of the time of phase inversion induced by water vapor, blended amount of PEI and amount of crosslinking agent on membrane performance were investigated. The prepared blend membranes have specific surface area of 12.04-24.11 m(2)/g and pure water flux (PWF) of 10-50 ml/cm(2) min with porosity of 63-75%. The membranes, made of 0.15 50 wt.% PEI/CA ratio and 0.5 crosslinking agent/PEI ratio, were applied to adsorbing Cu2+ and bovine serum albumin (BSA) individually. The maximum adsorption capacity of Cu2+ ion on the blend membrane is 7.42 mg/g dry membrane. The maximum adsorption capacities of BSA on the membranes with and without chelating Cu2+ ion are 86.6 and 43.8 mg/g dry membrane, respectively. (C) 2004 Elsevier B.V. All rights reserved.
关键词[WOS]: HOLLOW-FIBER MEMBRANES ;  AFFINITY MEMBRANE ;  ENDOTOXIN REMOVAL ;  ADSORPTION ;  POLYETHYLENEIMINE ;  SEPARATION ;  CHROMATOGRAPHY ;  PURIFICATION ;  ADSORBERS ;  SHEET
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000221310800007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/80975
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.Natl Engn Res Ctr Membrane Technol, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
3.Dalian Univ Technol, Sch Chem Engn, Dalian 116012, Peoples R China

Recommended Citation:
Chen, ZA,Deng, MC,Yong, C,et al. Preparation and performance of cellulose acetate/polyethyleneimine blend microfiltration membranes and their applications[J]. JOURNAL OF MEMBRANE SCIENCE,2004,235(1-2):73-86.
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