制膜条件对PVDF膜形态结构的影响_陆茵

性能的膜。随聚合物浓度的减小,膜有效孔隙率和平均孔径逐渐增加,在制平板膜时可以选择较低聚合物浓度的铸膜液以得到高性能的膜。参考文献:[1]KLi,JFKong,DLWang,etal.Tailor-madeasymmetricPVDFhollowfibersforsolublegasremoval[J].AicheJ,1999,45(6):1211-1219.[2]SChabot,CRoy,GChowdhuryl,etal.Developmentofpoly(vinylidenefluoride)hollow-fibermembranesforthetreamentofwater/organicvapormixtures[J].JApplPolymSci,1997,65:1263-1270.[3]KJian,PNPintauro.AsymmetricPVDFhollow-fibermembranesfororganic/waterpervaporationseparation[J].JMembSci,1997,135:41-53.[4]CASmolders,AJReuvers,BMBoom,etal.Microstructuresinphase-inversionmembranes:part1,Formationofmacrovoids[J].JMembSci,1992,73:259-275.[5]THYoung,LRCheng,DJLin,etal.MechanismofPVDFmembraneformationbyimmersion-precipitationinsoft(1-octanol)andharsh(water)nonsolvent[J].Polymer,1999,40:535-5323.[6]ABottino,GCamera-Roda,GCapannelli,etal.Theformationofmicroporouspolyvinylidenefluoridemembranesbyphaseseparation[J].JMembSci,1991,57:1-20.[7]SPDeshmukh,KLi.EffectofethanolcompositioninwatercoagulationbathonmorphologyofPVDFhollowfibremembranes[J].JMembSci,1998,150:75-85.[8]DongliangWang,KLi,WKTeo.Preparationandcharacterizationofpolyvinylidenefluoride(PVDF)hollowfibermembranes[J].JMembSci,1999,163:211-220.[9]许振良,翟晓东,陈桂娥.高孔隙率聚偏氟乙烯中空纤维超滤膜的研究[J].膜科学与技术,2000,20(4):10-13.[10]俞三传,高从楷.小孔径PVDF超滤膜的研制[J].水处理技术,1999,25(2):83-86.[11]HYasuda,JTTsai.Poresizeofmicroporouspolymermembranes[J].JApPpplPolymSci,1974,18:805-819.EffectsofPreparingConditiononPVDFMembraneMorphologyLUYin1,2,CHENHuan-lin1,LIBo-geng1(1.LollegeofMaterialsandChemicalEngineering,ZhejiangUniversity,Hangzhou310027,China;CollegeofScience,NingboUniversity,Ningbo315211,China)Abstract:ThePVDFmembranewhichwaspreparedwithdry-wetphase-inversionmethodwasinvestigated.Thephaseseparationkinet-icsduringmembraneformationprocesswasstudiedusinglighttransmissionexperimenta1.Themeanporesizeandeffctiveporosityofmembranesweredeterminedbygaspermeationmethod.CombinedwiththeSEMphotographs,themembranemorphologystructureandmembranepropertywascharacterized.Theexperimentalresultsindicatedt