PSfPPESK共混超滤膜制备及性能研究

312Vol.31No.220114MEMBRANESCIENCEANDTECHNOLOGYApr.2011PSf/PPESK共混超滤膜制备及性能研究于兰哲1,唐橙橙1,贠延滨1*,王丽华2*(1.,100083;2.,100190):将聚砜(PSf)和聚醚砜酮(PPESK)按比例共混,采用L-S相转化法制备超滤膜,考察共混比固含量添加剂等对膜水通量和截留率的影响.实验结果表明:当聚合物的固含量为12%,PSf/PPESK共混比为7/3,NMP作溶剂,PEG4000作添加剂,凝胶浴温度50,挥发时间为10s时,所制得的PSf/PPESK共混膜性能较好,其水通量为1930L/(m2h),对牛血清蛋白的截留率为58.2%.:超滤膜;共混;聚砜;截留率;纯水通量:TQ31:A:10078924(2011)02008906,,.,.,[1-3].,.,,,[4-5].,[6-10].(PSf)OSO,;.,.,,,,[11]/41138.3L/(m2h).(PPESK),,,.PSf,PPESK[12-13].,(PSf)/(PPESK).PSfPPESK,PSf/PPESK,,PSf/PPESK.1实验部分1.1(PSf),,;(PPESK),,;N,N-(DMAc),,;N--2-(NMP),,;N,N-(DMF),,;(LiClH2O),:20091124;:20100720:948(2009462);:(1985),,,.*[e-mail]9031,;(ZnCl2),,;400(PEG-400),,;600(PEG-600),,;4000(PEG-4000),,;,,:1.8~2.0S/cm.(TP-214),;(HZQ-F160A),;(HSY-2MB),;(TG-140),;(UV-7504),;,;:.1.21.;2.;3.;4.;5.;6.:1Fig.1Theflowchartoftheexperiment1.3L-S.:PPESKPSf,,24h,,.,4h,.,;6.12h.1.41.4.1(15)0.05MPa,.F=V/At.,F,m3/(m2h);V,m3;A,m2;t,h.1.4.2(15)0.05MPa,.,.R=(1-Cp/Cf)100%,R,%;Cp,mg/L;Cf,mg/L.2结果与讨论2.1,.,:HMV=(1-2)212,HMV;1,212;1,212.,GM,.-,,,,.,,,.,.,()0.5,[14]..1PPESKPSfNMPDMFDMAc.1,PSfPPESK,dph,,0.1(cal/cm3)1/2,.PPESKPSf.NMPDMAc0.5,DMF0.5,PSf/PPESKNMPDMAc.,,,2:PSf/PPESK91,[15].NMP.表1PPESKPSf和溶剂的溶解度参数[16]Table1SolubilityparametersofPPESK/PSf/solventdphspPPESK9.25.54.111.5PSf9.15.54.011.4NMP8.25.94.611.1DMF8.56.75.512.1DMAc8.25.65.011.1:(cal/cm3)1/2,1cal=4.1868J.2.2PSf/PPESK(12%;1%LiCl),,.PSf,(2).,.PPESK,,.,.,,,,,,.,.2PSf/PPESKFig.2TheproportionofPSf/PPESKvsfluxandrejection,-,.,L-S,.PSf,,,.,PSf/PPESK,0.05MPa,0.99m3/(m2h),62.33%.PSf/PPESK=100(),0.28m3/(m2h),53.7%;PSf/PPESK=010(),0.53m3/(m2h),74.8%,PPESKPSf,,PPESK.2.3PSf/PPESK73(),.,,,,.,,,,.,,();,,().,,(3),,,,,,,,,,,(),,,,.,,,,,.,.,;20%,.,.12%.92313(PSF/PPESK)Fig.3Concentrationofpolymer(PSf/PPESK)vsfluxandrejection2.4,.,.,,,..,.LiClZnCl2,,,,.45,ZnCl2LiCl.,LiCl4%,0.05MPa,1.38m3/(m2h),64.6%;ZnCl23%,1.54m3/(m2h),85.8%.4Zncl2Fig.4ConcentrationofZnCl2vsfluxandrejection5LiClFig.5ConcentrationofLiClvsfluxandrejectionPEG400PEG600PEG4000,PEG.6,PEG40005%,.PEG600(7).PEG400005%,,(8).PEG40003%,1.58m3/(m2h),73%.,PEG,.2.52:PSf/PPESK938PEG4000Fig.8ConcentrationofPEG4000vsfluxandrejection.,,,;,,,;,,.,;,,,.,,.,;,,.,,,;,.,,.,,.,;,.9,50,,1.73m3/(m2h),53.9%.9Fig.9Temperatureofcoagulationbathvsfluxandrejection2.6,,.,,,,;,,,.,,.,.,;,.,,.,,,.,,,.,.,,;,.,,,,,,.10,10s,0.05MPa,58.2%,1.930m3/(m2h).10Fig.10Evaporationtimevsfluxandrejection3结语PSf,.PSf,PPESKPSf9431..PSfPPESK,PSf/PPESK,.:PSf/PPESK73();NMP;12%;PEG4000;50;10s,1.930m3/(m2h),58.2%.[1].[M].:,2004:269-364.[2].[M].:,2000:207.[3],,.[J].,2007,(1):51-55.[4].[J].,2001,(4):10-13.[5],,,.(SPES)/(PSF)[J].,2007,(6):864-868.[6]CarstenBlicke,PeinemannKV,NunesSP.Ultrafiltrationmembranefrompoly(ethersulfoneamide)/poly(etherimide)blends[J].JMembrSci,1993,(79):83-91.[7]YooJE,KimJH,KimY.Novelultrafiltrationmembranespreparedfromthenewmiscibleblendsofpolysulfonewithpoly(1vinylpyrrolidonecostyrene).copolymers[J].JMembrSci,2003,(216):95-106.[8],,,./[J].,2001(2):1-5.[9],,,./[J].,2000,(5):10-15.[10]ChungTS,XuZL.Asymmetrichollowfibermembranespreparedfrommisciblepolybenzimidazoleandpolyetherimideblends[J].JMembrSci,1998,147:35-47.[11],,./[J].,2003,(10):1-4.[12]贠延滨,李继定,陈翠仙.PVPK30和Tween80对中空[J].,2006,32(1):14-17.[13],,,.[J].,2005,25(5):44-48.[14].[D].:,2008.[15],,,.[J].,2004,1(24):24-27.[16].[D].:,1998.PreparationandcharacterizationofPSf/PPESKblendingultrafiltrationmembraneYULanzhe1,TANGChengcheng1,YUNYanbing1,WANGLihua2(1.CollegeofEnvironmentalScienceandEngineering,BeijingForestryUniversity,100083,China;2.InstituteofChemistry,ChineseAcademyofSciences,100190,China)Abstract:Theblendultrafiltrationmembranewasmadeusingpolysulfone(PSF)andpoly(phthalazinoneethersulfoneketone)(PPESK)asmembranematerialbyliquidsolidphaseinversionmethod.Theeffectsofblendratio,polymerconcentrationandadditiveconcentrationuponthefluxesandBSAretentionwereinvestigated.Theexperimentalresultsshowedthattheoptimalpreparationparameterswerethepolymerconcentration12%,blendingratio(m(PSF)/m(PPESK))7/3,PEG4000asadditivecontent,thecoagulationbathtemperature50andevaporationtime10s.ThefluxofPSf/PPESKmembranewas1930L/(m2h)and58.2%rejectiontoBSA.Keywords:ultrafiltrationmembrane;blend;PSf;rejection;fluxofpurewater