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S1SupportinginformationCrosslinkedPolycarbonateMicrofiltrationMembranewithImprovedSolventResistanceChiSiangOnga,HuangTeikLaya,b,NavinRajTamilselvama,JiaWeiChewa,b*aSchoolofChemicalandBiomedicalEngineering,NanyangTechnologicalUniversity,62NanyangDrive,637459,SingaporebSingaporeMembraneTechnologyCentre,NanyangEnvironmentalandWaterResearchInstitute,NanyangTechnologicalUniversity,637141,Singapore*Correspondingauthor:JiaWeiChew,email:JChew@ntu.edu.sg
1S2ListoffiguresandtablesFigureS1:SEMimagesofPCTE-BPEImembraneatmagnificationof(a)10μmand(b)1μm.FigureS2:PoresizedistributionsofpristinePCTEandPCTE-BDGmembranesbasedonSEMimages.FigureS3:PermeanceofDIwaterandmethanol,andrejectionofglassspheresforfeedscomposedof70:30:1massratioofwater,methanol,andglassspheres.FigureS4:SEMimagesofPCTE-BDGmembraneaftersolventstabilitytest(DMSO)atmagnificationof(a)10μmand(b)1μm.Thewhiteaggregatesappearedontheimageistheremainingresidueafterwipedbylint-freetissue.FigureS5:FTIRspectraof(a)originalPCTE-BDGmembraneand(b-d)PCTE-BDGmembraneaftersoakinginto1000ppmNaCl,pH2andpH10,respectively.TableS1:PhysicalandsolventpropertiesTableS2:Averageparticlediameteroffeed(70:30:1massratioofwater,IPA,andglassspheres),permeatesofPCTEandPCTE-BDGmembranes.TableS3:SurfacechargeofPCTEandPCTE-BDGmembranesatpH7-7.5andzetapotentialoffeed(70:30:1massratioofwater,IPAandglassspheres).TableS4:Performancecomparisonofdifferentorganicsolventmicrofiltrationpolymericmembranes.
2S3(a)(b)FigureS1:SEMimagesofPCTE-BPEImembraneatmagnificationof(a)10μmand(b)1μm.
3S4FigureS2:PoresizedistributionsofpristinePCTEandPCTE-BDGmembranesbasedonSEMimages.
4S524001002200200080r)1800a.b1600).h2%60/m1400(Lno(1200tieccnjea100040eeR800rmeP6002040020000PCTEPCTE-BDGFigureS3:PermeanceofDIwaterandmethanol,andrejectionofglassspheresforfeedscomposedof70:30:1massratioofwater,methanol,andglassspheres.
5S6(a)(b)FigureS4:SEMimagesofPCTE-BDGmembraneaftersolventstabilitytest(DMSO)atmagnificationof(a)10μmand(b)1μm.Thewhiteaggregatesappearedontheimageistheremainingresidueafterwipedbylint-freetissue.
6S7d)%(cecntaitmsnbraTa4000350030002500200015001000Wavenumber(cm-1)FigureS5:FTIRspectraof(a)originalPCTE-BDGmembraneand(b-d)PCTE-BDGmembraneaftersoakinginto1000ppmNaCl,pH2andpH10,respectively.
7S8TableS1:Physicalandsolventproperties1SolventsChemicalDensityViscosityDipoleMolecularBoilingDielectricPolarityFormulaweight(g(gmL-1)pointconstantmoment(mPa?s,mol-1)(℃)(AsVm-1)25℃)(D)AcetoneC3H6O58.080.78456.00.29520.702.695.1TolueneC7H892.140.867110.60.5602.380.312.4DMSOC2H6OS78.131.100189.01.98746.684.107.2EthylC4H8O288.110.90277.10.4286.021.884.4acetateIPAC3H8O60.10.78682.51.9619.921.663.9
8S9TableS2:Averageparticlediameteroffeed(70:30:1massratioofwater,IPA,andglassspheres),permeatesofPCTEandPCTE-BDGmembranes.Averageparticlediameter(nm)Feed5450±260PermeateofPCTE1.21±0.34PermeateofPCTE-BDG1.88±0.46
9S10TableS3:SurfacechargeofPCTEandPCTE-BDGmembranesatpH7-7.5andzetapotentialoffeed(70:30:1massratioofwater,IPAandglassspheres).Zetapotential(V)PCTE-0.015±0.001PCTE-BDG-0.024±0.002Feed-0.264±0.033
10S11TableS4:Performancecomparisonofdifferentorganicsolventmicrofiltrationpolymericmembranes.MembranesFabricationmethodsPoresizePermeance(L/m2.h)FitlrationTargetedpollutantsRejectionTypesofsolventReferences(μm)pressure(bar)(%)resistancePolybenzoxazinePhaseinversion3.4~97-260(THF)0.0084Water-in-toluene,Water-96.3Tetrahydrofuran2in-chloroform(THF),Toluene,Chloroform,Dimethylacetamide(DMAC),N-Methyl-2-pyrrolidone(NMP)OxidizedElectrospinning0.44~753.341Polystyrenemicrospheres99.91,3-dimethyl-2-3poly(arylenesulfide(Water)(0.2and0.5μm)imidazolidinonesulfone)-6(O-(DMI),PASS)Dimethylformamide(DMF),THFPolycarbonateCommercialPCTE2~800-10000.5Glassspheres(9-13μm)99.9Acetone,DMSO,membrane(WaterandIPA)Ethylacetate,ThisworkToluene,IPA1.Smallwood,I.M.,InHandbookofOrganicSolventProperties,Butterworth-Heinemann:Oxford,1996.2.Zhong,M.;Su,P.-K.;Lai,J.-Y.;Liu,Y.-L.,Organicsolvent-resistantandthermallystablepolymericmicrofiltrationmembranesbasedoncrosslinkedpolybenzoxazineforsize-selectiveparticleseparationandgravity-drivenseparationonoil-wateremulsions.JournalofMembraneScience2018,550,18-25.3.Liu,Z.;Wei,Z.;Long,S.;Wang,X.;Yang,J.,Solvent-resistantpolymericmicrofiltrationmembranesbasedonoxidizedelectrospunpoly(arylenesulfidesulfone)nanofibers.JournalofAppliedPolymerScience2020,137(13),48506.
