高性能聚醚砜聚乙烯醇复合超滤膜的研究吴宗策

60[1-4]。、、、[4-5]。[6]。、[6]。。。。[6]。PVA、、[5-9]。PVAPVA。PVA。PVAPVA[4]。PVA/PES80℃PES/PVA。PES/PVA、。11.1PVA86.5%～89%500PES20000。1.2PESPES。180gPES550018PESPVA/。、PESPES/PVA。、。。。PESPVA、。。。98%。TQ028.8A1000-3770(2016)[e-mail]@vontron.com.cn42220162Vol.42No.2Feb.,2016DOI:10.16796/j.cnki.1000-3770.2016.02.01251820gN,N-DMF80℃10h。PES30μm。24h。PESPES。20℃5min。PESDMFPES50±5μm。PES。1.3PES/PVAPVA、PVA。PESPVA10±1s。PVAPES80℃5minPES/PVA。1.4PES/PVA1.4.1Nanoscope@VMulti-Modeⅷ。xy15.0μmE。2.0μm。1.0Hz。1.4.2DSA30KrussGmblt。DSA4。10。1.4.3NicoletIs10。Barnes300ATR。0.4μm45°。4cm-164。OPUS。80℃6h。1.51.5.1。。0.2MPa25℃30min。。。J=V/(At)。1JVAt。1.5.2。R=(1-cp/cf)×100%。2Rcfcp。1.5.3PES/PVA2%、6%、10%48hpH7。PEG200001000mg/L25℃0.2MPaPEG20000。PES/PVA0.1%、0.5%、1%、2%48hpH7。PEG200001000mg/L25℃0.2MPaPEG20000。1.5.4PEG200001000mg/LPEG200001000mg/L25℃0.2MPaPEG20000。1.5.51000mg/L25℃0.2MPaTOC-VCPHTOC。4225222.1PES/PVA1PESPES/PVAFTIR。PESPES/PVA3420～2500cm-1－OHPVA。PES/PVA1728cm-1－C=O。PVAPES。2PESPES/PVAAFM。PESPVA。PESPES/PVA。。2.2PESPES/PVAPESPES/PVA50s。PES48°PVAPES/PVA0。PVAPES。2.33PES/PVA。30.2MPa35.58L/(m2·h)PEG2000094.72%0.41MPa54.45L/(m2·h)86.26%。0.2MPa53.03%8.93%0.55MPa58.40L/(m2·h)81.00%。0.41MPa7.81%6.10%。PES/PVA。。PES/PVAPEG20000。。4PES/PVA4PES/PVAFig.4TemperaturedependenceoftherejectionandwaterfluxofPES/PVAmembrane30405060708065707580859095100
/%/Lmh) /5060708090100JR3PES/PVAFig.3PressuredependenceoftherejectionandwaterfluxofPES/PVAmembrane0.20.30.40.50.6354045505560
/%JR/MPa /Lmh)8082848688909294964000350030002500200015001000500-0.10.00.10.20.30.40.5
/%/cm 1728cm1651cm3420cm1PESPES/PVAFTIRFig.1FTIRspectraofPESandPES/PVAultrafiltrationmembrane2aPES2bPES/PVA2AFMFig.2AFMimages/53。PES/PVA。80℃PES/PVAPEG2000051.78%PES/PVA。1PEG200002PEG20000。2.4PES/PVA5PES/PVA48h。。PES/PVA21%。4%。10%PES/PVAPEG2000090%。PES/PVA。6PES/PVA25%。PES/PVAPEG20000。2%PES/PVAPEG2000090.03%。PES/PVA。2.5PES/PVAPES/PVAPES/PVA7。PEG200001000mg/L25℃0.2MPa。7PES/PVAPEG2000038.25L/(m2·h)。PEG2000094.94%。PESPVAPES/PVAPVAPES。2.6PES/PVAPES/PVAPVAPES。PES/PVA。8PES/PVA4h。20h34.23L/(m2·h)6PES/PVAFig.6PerformanceofPES/PVAmembraneasfunctionofNaOHconcentration-0.30.00.30.60.91.21.51.82.13436384042444648
/%/Lmh)w /%8990919293949596JR5PES/PVAFig.5PerformanceofPES/PVAultrafiltrationmembraneasfunctionofcitricacidconcentration-202468103436384042444648JR
/Lmh)w /%90919293949596/%7PES/PVAFig.7Long-termperformanceofPES/PVAultrafiltrationmembrane02468101236.537.037.538.038.539.039.540.0
/dJR/% /Lmh)9192939495969798991004225419.63%。40.14L/(m2·h)95%。PES/PVA98%。PES/PVA98%95%。3PVAPES/PVAPES/PVAPES/PVA21%～25%PEG2000090%PES/PVAPES/PVA98%95%。[1]BaneleVatsha,JaneCatherineNgila,RichardMMoutloali.Preparationofantifoulingpolyvinylpyrrolidone(PVP40K)modifiedpolyethersulfone(PES)ultrafiltration(UF)membraneforwaterpurification[J].PhysicsandChemistryoftheEarth,2014,67-69:125-131.[2]WeiZhao,YanleiSu,ChaoLi,etal.FabricationofantifoulingpolyethersulfoneultrafiltrationmembranesusingPluronicF127asbothsurfacemodifierandpore-formingagent[J].JournalofMembraneScience,2008,318:405-412.[3]HeruSusantoa,b,MathiasUlbricht.Characteristics,performanceandstabilityofpolyethersulfoneultrafiltrationmembranespreparedbyphaseseparationmethodusingdifferentmacromolecularadditives[J].JournalofMembraneScience,2009,327:125-135.[4],.[J].,2009,28:67-71．[5].[J].,2013,18:30．[6]FuLiu,NAwanisHashim,YutieLiu,etal.ProgessintheproductionandmodificationofPVDFmenbranes[J].JournalofMembraneScience,2011,375:1-27.[7],,,.[J].,2008,4:40-43．[8]LiRH,BarbariTA.Performanceofpoly(vinylalcohol)thin-gelcompositeultrafiltrationmembranes[J].JournalofMembraneScience,1995,105:71-78.[9]ShubhangiGGholap,JyotiPJog,ManoharVBadiger.Synthesisandcharacterizationofhydrophobicallymodifiedpoly(vinylalcohol)hydrogelmembrane[J].Polymer,2004,45:5863-5873.StudyonHighPerformancePES/PVACompositeUltrafiltrationMembraneWuZongce,GuoYuyang,LiangSongmiao,HuLijie,JinYan,CaiZhiqi（VontronTechnologyCo.Ltd.,Guiyang550018,China）Abstract:Thepolyethersulphone/polyvinylalcohol(PES/PVA)compositeultrafiltrationmembranewaspreparedbycoatingastrongcross-linkingPVAlayeronthesurfaceofPESmembrane.ThestructureandpropertiesofPESmembraneandPES/PVAcompositeultrafiltrationmembranewerecharacterizedbyFTIRspectroscopy,atomicforcemicroscopyandcontactangleanalysis.Waterfluxandcut-offmolecularweightofthemembranewerefurthermeasuredunderdead-endflowmodel.Moreover,acid-alkaliresistanceandtemperaturestabilityofthemembraneweremeasuredunderdifferentoperationconditions.Itspotentialapplicationinoil-waterseparationwasalsoexplored.OurresultsshowedthatmembranesurfacewithPVAcoatinglayerbecamesmootherandmorehydrophilic.Themembranehasstrongacid-alkalidurationandlong-termoperationstability.Cut-offmolecularweightofthemembranedecreaseswiththeincreaseoftemperature.Theresultsofoilfoulingexperimentsrevealedthatthemembranewaswellfouling-resistant.Theseparationratebetweenoilandwaterofthemembranecouldevenreach98%,which