1正辛基3甲基咪唑六氟磷酸盐离子液体对聚砜分离膜的结构控制及其作用机理

11201011ACTAPOLYMERICASINICANo.11Nov.20101299*2009-11-302009-12-252007K071[e-mail]10.3724/SP.J.1105.2010.094261--3-*7100721--3-C8mimPF6.C8mimPF6、、C8mimPF6、.C8mimPF6C8mimPF6.C8mimPF6.C8mimPF6.、、.1～3、4～9、ZnCl102、LiCl11、12Span、Tween13～1516～19...ZnCl2、LiCl.SpanTween..、、2021.22、23～272829.1300℃23456.、.、..1--3-C8mimPF6.11.1PSFη=0.45～0.5、N-NMP、PEGPEG400、PEG10000、2010C8mimPF630、.AMRAY-1000BSEMJSM9000A2910MDSCX’PertPro.X722S-JY-82.1.220%C8mimPF6/N-NMP50℃10h.24h0.5min19℃24h.Fig.1SEMimagesofthesectionofPSFmembranesbyusingdifferentcontentsofC8mimPF6porogenicagenta4%b8%c15%d17%e20%1.3AMRAY-1000BJSM9000AAFM.0.81.4MPa10min1.2MPaJY-82X-ray.22.1C8mimPF6.1aC8mimPF64%2～6μm10～24μm.C8mimPF68%1b4%13μm.1cC8mimPF615%20μm.C8mimPF617%1d.1a1dC8mimPF6、.C8mimPF6.1eC8mimPF6NMP.0031111--3-2PEG400.PEG4006%.PEG40015%10%.PEG400.PEG400C8mimPF6、.Fig.2SEMimagesofthesectionofPSFmembranesbyusingdifferentcontentsofPEG400porogenicagenta6%b10%c15%Fig.3SEMandAFMimagesofPSFmembranessurfacebyusingC8mimPF6asporogenicagenta0%b4%c15%upsurfaced4%downsurface2.2C8mimPF6SEMAFMC8mimPF6.3SEMAFM.3a0%C8mimPF6SEMAFM.3bC8mimPF64%SEM0.5～0.6μm.AFM.33.7Lh－1·m－2PEG1000092.3%..3d4%AFM10312010.SEM0.2～1μm.、4%.3cC8mimPF615%SEM0.94μm.2×104.4%15%0.4μm.AFM.4%15%.C8mimPF6.2.3C8mimPF6C8mimPF6.4PEG400.JPEG10000RPEG10000.PEG400C8mimPF6PEG10000.4%33.7L·h－1·m－2PEG1000092.3%.C8mimPF68%..PEG4004%6%0.10%PEG1000010.2L·h－1·m－2.PEG400.C8mimPF6.、、、Fig.4TheInfluenceofconcentrationofadditivesonseparationofthemembranes.PEG400.2.4C8mimPF6、.C8mimPF6.C8mimPF6NMP.C8mimPF6、NMPH2OC8mimPF6.15%C8mimPF6F3.67%O11.44%、S7.9%、C76.99%C8mimPF6.C8mimPF62031111--3-1.1.C8mimPF6..Table1ContactanglesofPSFmembranesC8mimPF6%041520Contactangles℃70.062.655.051.5.C8mimPF6C8mimPF6.2.5C8mimPF6Ⅹ.dX.5X.5XX.C8mimPF6X.C8mimPF6d4.8～5.0.Fig.5XRDofthePSFmembranesC8mim+、PF6－、、..2.6C8mimPF6DSC2DSC.2C8mimPF64%Tg32.45℃.C8mimPF6.Table2GlasstransitiontemperaturesofPSFmembranesC8mimPF6%0481517.520Tg℃157.70125.25131.59132.96133.19133.38C8mimPF6.C8mimPF6Tg.C8mimPF6Tg..2.7C8mimPF6C8mimPF6C16mim+PF6－.Gassion_03B3LYP6-311Gd30312010pC8mimPF613.5896Debye6.C8mimPF6、、./NMP/H2O-.Fig.6OptimalstructureofC8mimPF6-.-.Reuvers31.C8mimPF6.ReuversSmolders.C8mimPF6.C8mimPF6-.C8mimPF6.C8mimPF6.C8mimPF6.3C8mimPF6、、.C8mimPF6.C8mimPF6、...REFERENCES1ChakrabartyBGhoshalAKPurkaitMK.JMembrSci20083151-236～472YooSHKimJHJhoJYWonJKangYS.JMembrSci20042361-2203～2073JungBYoonJKKimBRheeHW.JMembrSci20042431-245～574ChakrabartyBGhoshalAKPurkaitMK.JMembrSci20083091-2209～2215ChakrabartyBGhoshalAKPurkaitMK.JColloidInterfaceSci20093201245～2536IdrisAZainNMNoordinMY.Desalination20072071-3324～3397IdrisAYetLK.JMembrSci20062801-2920～9278ArthanareeswaranGThanikaivelanPSrinivasnKMohanDRajendranM.EurPolymJ20044092153～21599KimJHLeeKH.JMembrSci1998382153～16310KimSRLeeKHJhonMS.JMembrSci1996119159～6411LeeHJWonJLeeHYangYS.JMembrSci20021962267～27712HanMJ.Desalination1999121131～3913TsaiHALiLDLeeKRWangYCLiCLHuangJLaiJY.J.MembrSci200017697～1034031111--3-14TsaiHAHuangDHFanSC.WangYCLiCLLeeKR.JMembrSci2002198245～25815TsaiHAHuangDHRuaanRCLaiJY.IndEngChemRes2001405917～592216LaninovicV.Desalination20051861-339～4617KhayetMFengCYKhulbeKCMatsuuraT.Desalination20021481-3321～32718WangDLLiKTeoWK.JMembrSci2000176247～15819HouTonggangChenHuanlinZhangLin.ActaPolymericaSinica2008121204～120820TokudaHIshiiKSusanMABHTsuzukSHayamizuKWatanabeM.JPhysChemB20061102833～283921ZhangJMaYShiFLiuLDengY.MicroporousMesoporousMater20091191-397～10322LuXiangjunDouHuiChenDa.ActaPolymericaSinica20094385～38923RahmanMBrazelCS.PolymDegradStab200691123371～338224PengBZhuJLiuXQinY.SensActuatorsBChem20081331308～31425ScottMPRahmanMBrazelCS.EurPolymJ200339101947～195326ZhuNingLingJunXiaoKunShenZhiquan.ActaPolymericSinica20098838～84027DangJingyaChenFengxiangHanHuijingHeXiaohuaZhangYiqunXieMeiran.ActaPolymericSinica20084343～34928ZavrelMBrossDFunkeMBüchsJSpiessAC.BioresourTechnol200910092580～258729CuissinatCNavardPHeinzeT.CarbohydrPolym2008724590～59630HuddlestonGVisserAEReichertWMWillauerHDBrokerGARogersRD.GreenChem20013156～16431ReuversAJSmoldersCAF.JMembrSci198734167～86STRUCTURECONTROLLINGMECHANISMOFPOLYSULFONEMEMBRANESBYUSING1-n-OCTYL-3-METHYLLIMIDAZOLIUMHEXFLUOROPHOSPHATEIONICLIQUIDZHAOYameiHUXiaolingGUANPingXUEGuanDepartmentofAppliedChemistrySchoolofNaturalandAppliedSciencesNorthwesternPolytechnicalUniversityXi’an710072AbstractIonicliquid1-n-Octyl-3-MethyllimidazoliumhexfluorophosphateC8mimPF6wasusedasastructure-controllingadditiveandpolysulfonePSFmembraneswithdifferentstructureswerepreparedbythewet-phase-inversioninthiswork.TheresultsindicatedthationicliquidC8mimPF6hadimportantinfluenceonthepore-forming.WithincreaseofconcentrationofionicliquidC8mimPF6incastingsolutionsthestructuresofthemembraneschangedfromasymmetricfingerporethelengthened-bigporeandthebigcavestospongypore.WhentheconcentrationofC8mimPF6was4%themembranehadtheasymmetricfinger-poresstructuretheporesizeclosetoitssurfacelayerwasabout2～6μmandthatclosetoitssublayerwasabout10～70μmtheretentionrateandfluxofPEG10000were92.3%and33.7L·h－1m－2.Theanalysisindic