多元合金超滤膜研制俞三传

:1007-8924(2001)02-0010-04多元合金超滤膜研制俞三传　高从(,　310012)　:主要研究了聚醚砜(PES)、聚砜(PSF)和磺化聚砜(SPSF)共混所形成的多元合金超滤膜的性能和膜的孔径分布特性,初步探讨了多元合金超滤膜的成孔机理,并对共混体系的组成及相容性与合金超滤膜性能间的关系作了详细讨论.研究结果表明,共混可明显改善超滤膜的孔径分布和膜的孔结构,为制备高性能超滤膜提供一种有效途径.:超滤膜;共混;聚醚砜;聚砜;磺化聚砜:TQ028.8　　:A　　70.,(CA),CA;,(PSF)、(PSA)、(SPSF)、(PAN)、(PVC)(PVDF).80,(PES)(PEK),.,、,,,,.,.,、,[1,2].、、、,.PES、PSFSPSF、、,.1　实验部分1.1　,,0.57,;,,0.44,;,IEC=0.88,.1.2　(DMF)、(DMAC)N-(NMP),,、、,.、,,,.1.3　1.3.1　,.0.1%C.C751().10cm2,0.2MPa,25℃.:2000-06-02;:2000-07-07:(1969～),,,,,.21　2　　　　　Vol.21　No.220014MEMBRANESCIENCEANDTECHNOLOGYApr.2001DOI:10.16159/j.cnki.issn1007-8924.2001.02.0031.3.2　,-.2　结果与讨论2.1　2.1.1　PES-PSF,,,PSF,PES-PSF,(BSA)(:67000),1.1　PES-PSF1,PES-PSF,.PSF,,PSF50%,;PSF,.(CV)[3],、,、,.PES-PSFBSA,1,.PSFw=35%～75%,,PSFw=50%,;.,,PESPSF、.[3],PES-PSF,PSFw=35%～75%,,.PES-PSF,,,,;,、,PESPSF[3],,,,、,,,、,,、.PES-PSF,,;,、,,、,、,.,PES-PSF,、,,(、);PES-PSF,、,,,、.2.1.2　PES-PSF-SPSF、PES-PSF,,PES　2:·11　　　·　PSF(SPSF),,,PES/PSF,SPSF,PES-PSF-SPSF.C(12500),2.2　PES-PSF-SPSFPES/PSF、2,SPSF,,C,SPSFw=30%,,;SPSF,,.SPSF,SPSFPESPSF,SPSFPESPSF、,,SPSF,.、.,PES-PSF,SPSF,(),、.2.2　,,,.3PSF、PES-PSFPES-PSF-SPSF.3　1.PSF;2.PES-PSF;3.PES-PSF-SPSF3,.,,“”,,;PES-PSF,,;PES-PSF-SPSF,.,,.,,,.3　结论1),.2)PES-PSF,.,;,.3)PES-PSF,(SPSF),、.4),.　·12　　　·　　　　　21　[1]AuthowyRC.Ultrafiltrationmembranesandapplications[M].NewYorkandLondon:PlenumPress,1980.1～82.[2]MarzeX,MinfrayM.Mixtureoftwopolyetherstomakeanultrafiltrationmembrane[P].USPat:4319008,1982-03-09.[3],.-[J].,1999,19(5):23～26.StudyonmultinaryalloyultrafiltrationmembraneYUSanchuan,GAOCongjie(DevelopmentCenterofWaterTreatmentTechnology,StateOceanicAdministration,Hangzhou310012,China)Abstract:Polyethersulfone(PES),polysulfone(PSF)andsulfonatedpolysulfone(SPSF)binaryandternaryal-loyultrafiltrationmembraneswerepreparedandstudiedinthispaper.Therelationshipbetweenthemembraneperformanceandthecompositionormiscibilityofthealloysystemandthecharacterizationoftheporesizedistri-butionofmembranewerediscussed.Theporeformationmechanismofalloyultrafiltrationmembranewasalsopreliminarystudiedinthispaper.Theresultsshowedthat,polymerblendcouldimprovetheultrafiltrationmembraneperformanceandporesizedistribution.Polymerblendwasoneoftheeffectivemethodstopreparehighperformanceultrafiltrationmembrane.Keywords:ultrafiltrationmembrane;polymerblend;polyethersulfone(PES);polysulfone(PSF);sulfonatedpolysulfone(SPSF)(9)NanofiltrationofL-phenylalanineandL-asparticacidaqueoussolutionanditsprocesssimulationWANGXiaolin1,YINGAiling2(1.DepartmentofChemicalEngineering,TsinghuaUniversity,Beijing100084,China;2.DepartmentofChemicalEngineering,HuaihaiInstituteofTechnology,Lianyungang222000,China)Abstract:Thepermeationexperimentsofaqueoussolutionofaminoacids(L-phenylalanineandL-Asparticacid)werecarriedoutwithnanofiltrationmembranes.Therejectionsofphenylalanineandasparticacidareabout0and90%,respectively.Theresultsshowthattheaminoacidshavinglargedifferencesofisoelectricpoints(pI)canbeseparatedsatisfactorilybyadjustingthevalueofpH.Thentheconcentrationandseparationprocessofphenylalanineandasparticacidsolutionwassimulated.Abatchwiseconcentrationanddiafiltrationsystemwasdesigned.Theresultsshowthatitisfeasibletoseparatephenylalanineandasparticacidinviewpointoftechnology.Keywords:nanofiltration;membraneseparation;aminoacid　2:·13　　　·