Preparation and Separation Performance of Solvent-Resistant Polyimide Nanofiltration Membrane

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Abstract In this study, solvent-resistant nanofiltration polyimide (PI) membrane was prepared from polyamic acid (PA) solution via immersion precipitation phase inversion process. Polyimide precursor was obtained from pyromellitic dianhydride (PMDA) and 4,4′-diaminodiphenyl ether (ODA). By performing the reactants pretreatment, adjusting reaction time, the characteristic viscosity of PA could be stabilized at 0.99 mL/g. The separation performance of the synthesized membrane was evaluated by using PEG300. The membrane prepared by 15% PA, evaporation for 30 min and the gel-bath of 30% ethanol aqueous solution showed a good PEG300 rejection rate up to 91% with a flux of 5.75 L/(m~2·h) when the operation pressure was 2 MPa. The prepared PI membrane will have promising applications in separations of organic solvent systems.

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Received 2005-05-15; published 2005-05-15

Cite this article:

LI Wei, WANG Lin, ZHANG Jin-li, DING Tao njin University,Tianjin 300072,China).Preparation and Separation Performance of Solvent-Resistant Polyimide Nanofiltration Membrane[J] Chemcial Industry and Engineering, 2005,V22(3): 166-171

[1]	OHYAH,OKAZAKII,AIHARAM,etal.Studyonmolecularweightcut offperformanceofasymmetricaromaticpolyimidemembrane[J].JMembraneSci,1997,123(71):143-147.
[2]	OKAZAKII,OHYAH,SEMENOVASI,etal.Studyonmolecularweightcut offperformanceofasymmetricaromaticpolyimidemembrane:Effectoftheadditiveagents[J].JMembraneSci,1998,141(72):277-282.
[3]	WHITELS,NITSCHAR.Solventrecoveryfromlubeoilfiltrateswithapolyimidemembrane[J].JMembraneSci,2000,179(74):267-274.
[4]	丁　涛.耐溶剂聚酰亚胺纳滤膜的研制[D].天津:天津大学,2003.
[5]	郑昌仁.高聚物相对分子质量及其分布[M].北京:化学工业出版社,1986.
[6]	阿德洛瓦.聚酰亚胺[M].北京:机械工业出版社,1981.
[7]	陆　茵.表面张力和凝胶时间对膜结构的影响[J].膜科学与技术,1998,18(6):37-41.
[8]	陆　茵.关于湿法想转化成膜机理的探讨[J].膜科学与技术,1999,19(5):38-43.
[9]	Z·阿默加德.反渗透膜技术·水化学和工业应用[M].北京:化学工业出版社,1999.
[10]	OHYAH,OKAZAKII.Nanotechnologicalmethodtocontrolthemolecularweightcut offand orporediameteroforganic inorganiccompositemembrane[J].JMembraneSci,1998,(75):141:65-74.
[11]	JONGHAKKIM,BYOUNGRYULMIN.Phasebehaviorandmechanismofmembraneformationforpolyimide DMSOwatersystem[J].JMembraneSci,2001,187:47-55.
[12]	YANAGISHITAH,KITAMOTOD.Separationperformanceofpolyimidecompositemembranepreparedbydipcoatingprocess[J].JMembraneSci,2001,188:165-172.
[13]	WHITELS.Transportpropertiesofapolyimidesolventresistantnanofiltrationmembrane[J].JMembraneSci,2002,205:191-202.
[14]	KIMI C,LEEK H,TAKT M.Preparationandcharacterizationofintegrallyskinnedunchargedpolyetherimideasymmetricnanofiltrationmembrane[J].JMembraneSci,2001,183:235-247.
[15]	丁俊琪,潘容华.聚砜酰胺的相对分子质量对其超滤膜性能的影响Ⅰ,聚砜酰胺的沉淀分级[J].水处理技术,1990,4(16):293-297.
[16]	丁俊琪,潘容华.聚砜酰胺的相对分子质量对其超滤膜性能的影响Ⅱ,膜性能与成膜机理[J].水处理技术,1990,5(16):337-345.
[17]	SMOLDERSCA.Microstructuresinphase inversionmembranes:(1)Formationofmacrovoids[J].JMembraneSci,1992,73:259-272.