PES超滤膜的制备工艺条件及化学稳定性研究

1642002.12JOURNALOFSHENYANGINSTITUTEOFCHEMICALTECHNOLOGYVol.16No.4Dec.2002:2001-12-21:(E0010012);(JB01039);:(1979-),,,,.:1004-4639(2002)04-0294-05PES,,,(,350002):采用国产聚醚砜(PES)为原料,以N-N二甲基乙酰胺(DMAc)为溶剂制备小截留分子量平板超滤膜.研究PES浓度添加剂种类及用量初生态膜蒸发时间等因素对超滤膜性能的影响.初步确定制备PES超滤膜的工艺条件,并研究其化学稳定性.用小角X射线散射法测定PES超滤膜的孔径分布及其平均孔径.:;;;;:TQ02818:A(MWCO),(MWCO10000).,.,.,[1].[2].(PES)B12(1350).PES.PES,.XPES.11.1(PES),.N,N-(DMAc),.B12,.7230,.1.2L-SPES[3~5].1.3J.B12(MW=1350)R.Pr.PESJPr,[6].X[7~9].PES.22.1PES123,PES12%~14%(,),12%~16%.,PES14%.,PES,,,,().1PES2PES3PES2.2456,,,,,.,.,,.,,.4562954,:PES2.3PESPES1.1PESJ/(ml/cm2#h)R/%Pr/%r/nm60012141261866119534147018126100641888175212928163771151311301622315561132714521243416858119171810173491047514371001,600,,(34nm),,.,(10~20nm),B12,.,,,B12.,,.2.4PESPES7~9.789,,,,,.,,,,,,.7892.5PES2:(20%)NaCl(10%)DMAc(50%),.NaClDMAc,,,.,,,DMAcPES,PES,PES.,,,.2PESr/nmJ/(ml/cm2#h)R/%Pr/%1618851473915980147(20%)2711291844216777179NaCl(10%)28168151074013474150DMAc(50%)26198131054313379197:PES14%,()4%,60s,27e,0.94.29620022.6PES3,PES(98%),50%,10-4g().,.,,.,PES.2.7SAXSPES4,X.20nm.4063100,83%6.5nm,4.8%76nm.3m/gm/g%(98%)010160*100100(50%)0101570101541191(40%)0101760101731170(9915%)0101680101604176(40%)0101760101760100(98%)0101850101802170(98%)0101650101603103*(98%),.4SAXSPESK42.6478189.3065228.22314095.67E2@106426.962451.3302619.009236.74213(-A)250.06861170.68432291.502593.1569ri/nm6.46382922.0351137.6327576.5762Wi@100%83.059.3056932.8441964.797r/nm12.16r/nm11.253(1):PES14%,,30~60s,.(2)PES,,,.,,,,.,,PES.,,,,B12.(3)PES,98%.(4)XPES,.:[1].[D].:,2001.[2],.[M].:,1993.197-198.[3],.[J].,1997,17(3):1-2.[4]YongTH,ChenLW.ADiffusion-controlledMod-elforWet-castingMembraneFormation[J].J.Mem-braneSci.,1991,59:169-181.[5]YongTH,ChenLW.PoreFormationMechanismofMembranesfromPhaseInversionMembranesandtheirRelevancetotheVariousSeparationRegimes[J].JApplPolymSci,1990,41:2739-2752.[6],.[M].:,1989.[7].X[M].:2974,:PES,1989.[8],.X(SAXS)[J].,1994,14(1):54-59.[9],,.X[J].,1997,25(3):112-115.StudyonPreparationConditionsandChemicalStabilityofPESUltrafiltrationMembraneCHENJian-rui,HUANGJia-le,DONGSheng-xiong,GONGQi(DepartmentofChemicalEngineering,FuzhouUniversuty,Fuzhou350002,China)Abstract:Inthiswork,flatultrafiltrationmembranewithsmallmolecularweightcut-off(MWCO)wassuccessfullypreparedbymeansofphaseinversionmethod,withpolyethersulfone(PES)asrawma-terialanddimethylacetamide(DMAc)assolvent.TheeffectsofPESconcentrationinthecastingsolu-tion,thekindoftheadditives,theconcentrationoftheadditiveinthecastingsolutionandtheevapora-tiontimeofnascentmembraneupontheperformanceofPESultrafiltrationmembranewereinvestigated.ThepreperationconditionofPESultrafiltrationmembranewerestudied.ThechemicalstabilityofthePESultrafiltrationmembranewasdiscussed.Additionally,smallangleX-rayscattering(SAXS)methodwasusedtomeasuretheporesizedistributionandaverageporesizeofthePESmembrane.Keywords:ultrafiltrationmembrane;polyethersulfone;smallmolecularweightcut-off(MWCO);preparingconditions;chemicalstability2982002