聚醚砜超滤膜的改性分析

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1、‰，i％ABSTRACTInthepaper,thePES／Si02hybridmembraneswerepreparedbywetphaseinversionmethod．ItWasinvestigatedthattheeffectsofmicronsilicadioxide(肛-Si02)andnanometersilicadioxide(n—Si02)ontheperformanceofPESmembrane．Meanwhile，猫additivesofPEGorMPCblendingintotheP

2、EShybridcomposite，itseffectsonthepropertiesofPESmembranewereevaluated．ThemethodofNMRspin—latticerelaxationtimeTivalueofPESWasusedtodetermineeffectofSi02．BlendingSi02intothePESsolution，theTIvaluedecreased．ThethermodynamicphasediagramsofdifferentPEScomposite

3、systemswereindependentlyachieved．ComparisonwithPESsystem，PES／Si02systemandthePES／Si02withPEGorMPChybridsystem，theirphasecurvesmovedtothepolymer／solventaxistosomedegreeinthethermodynamicphasediagram．ItWasindicatedthatthephaseseparationprocessofcastingsoluti

4、oncouldbefaster,inotherword，theresultsshowedthatthephaseseparationspeedincreasedinacertaindegreeandthemembraneformingspeedfasted．MeanwhilethepurewaterfluxandtheretentionrateofPES／Si02hybridmembranewereimprovedinadifferentdegree．ThePES／PVCblendmembraneswere

5、preparedbywetphaseinversion．TheeffectsofPVConPES／PVCblendmembraneswereevaluated．Theresultsshowedthattheslopeofkineticcurvewasincreased．AstheincreasingoftheconcentrationofPVCinPES／PVCsystem，thepurewaterfluxandtheretentionrateofPES／PVCblendmembraneswereimpro

6、vedsynchronistically．Blendingsmallquantityof肛一Si02intoPES／PVCsystem，thePES／PVChybridblendmembraneswereprepared．Theresultshowedthattheslopeofkinetiecurvewasincreased．、Mthincreasingthecontentof弘一Si02inPES／PVCsystem，thepurewaterfluxofPEShybridmembranetendedto

7、increaseexc印tforalittlebitdecreaseininitial，meanwhiletheretentionratedecreasedslowly．RegardingtheMPCblendedPES／PVC／Si02hybridmembrane，theslopeofkineticcurvestillincreased．WithincreasingthecontentofMPCinacertainrange，thepurewaterfluxandretentionofPEShybridm

8、embraneswereincreasedgradually．，TheUVradiationgraftingmodificationexperimentsonthePESmembranewereachievedthroughonewayandtwosteps，andthegraftingratiowereevaluated．TheresultsshowedthatthePESmembranewithhigherg