基于甘蔗渣的生物降解材料研究

192Vol.19,No.220033POLYMERMATERIALSSCIENCEANDENGINEERINGMar.2003(É)X,,,,,(,,200433):,,PEG#40096%,,,280mgKOHög380mgKOHög,:;;;:TS249.2:A:100027555(2003)0220194205,,,,,[1],,[2],,,,,,,11.1(),(20mesh80mesh),,10524h;1.2PEG#400,,,,1.31.3.1:YaoY.G.[3],1g,(20mL)80%()1,42,4h,,105,:=(ö)100%1.3.2[4]:pHX:2001204210;:2002206225:(59933070,39970598):,,41,,.©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(E2201)PHS23CKOH1gKOH,:(mgKOHög)=(B-C)N56.1W+A:BKOH(mL);CKOH(mL);NKOH(molöL);W(g);A1.3.3(FT2IR):KBr,,NicoletMangnaIR2550(FT2IR)22.1[3],,(Tab.1),,[5],(Fig.1)Tab.1ChemicalcompositionofBG,Wood,Amearnsiibarkandtannin[9]CompositionBGWoodBKTanninCellulose(%)3842455915200Hemicellulose(%)2024182220250Lignin(%)192016255100Tannin(%)45501002.2Fig.2H2SO4,,H2SO4,[6],,,H2SO4(6g),,,,,50g213gFig.1ResiduesoftheliquefiedBG,BKandtanninasfunctionsofliquefactiontimesolventcomposition:PEG#400öglycerolösulfuricacid=80ö20ö3,liquidratio:3ö2,temp.:150;1:BG;2:wood;3:BK;4:tannin.Fig.2ResiduesoftheliquefiedBGasfunctionsofliq-uefactiontimeatdifferentcatalystamountsolventcomposition(PEG#400öglycerolösulfuricacid)1:80ö20ö0;2:80ö20ö6;3:80ö20ö3;4:80ö20ö1.5;liquidratio:3ö2,temp.:150.2.3PEG#400,PEG#400,[7]PEG#400,(Fig.3),,,,,5912:(É)©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(PEG#400öglycerolösulfuricacid)1:80ö0ö3;2:80ö20ö3;liquidratio:3ö2,temp.:150.Fig.4ResiduesoftheliquefiedBGasfunctionsofliq-uefactiontimeatdifferentliquidratiosliquidratios(solventöBG)1:1.2;2:1.5;3:2;4:3;solventcomposition:PEG#400öglycerolösulfuricacid=80ö20ö3,temp.:150.2.4,,,(Fig.4),3,96%,BGPEG,BGPEG,,2.5Fig.5,130150,,170,,60min,170,60minFig.5ResiduesoftheliquefiedBGasfunctionsofliq-uefactiontimeatdifferenttemperaturesreactiontemp.1:130;2:150;3:170;solventcomposition:PEG#400öglycerolösulfuricacid=80ö20ö3,liquidratio:2ö1.Fig.6Changesinhydroxylvalueandacidvalueoftheliquefactionmixtureasfunctionsofreactiontimesolventcomposition:PEG#400öglycerolösulfuricacid=80ö20ö3,150,liquidratio:2ö1.2.6,,,,,(Pig.6),,,60min,,,170(Fig.7),6912003©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(Fig.5),,,Fig.7Changesinhydroxylvalueandacidvalueoftheliquefactionmixturesasfunctionsofreactiontimesolventcomposition:PEG#400öglycerolösulfuricacid=80ö20ö3,170,liquidratio:2ö1.Fig.8ChangesofHCO-OHöHC-Hasfunctionofreactiontime2.7IR(),3400cm-1,,,,2860cm-1CH2,CH2,1470cm-1Fig.8,,Fig.9IRspectraofbiomassresidueatdifferentreac-tiontimesolventcomposition:PEG#400öglycerolösulfu2ricacid=80ö20ö3,150,liquidratio:2ö1;0:bagasse;1:BG(20minliquefaction);2:BG(80minliquefaction);3:BG(140minliquefaction).IR(Fig.9),1506cm-11603cm-1(0)(1,2,3),,1730cm-1,,,,,,,[8],[1](WUChi2sheng).98(The2ndChinaPolyurethane98Interna2tionalProceedtngs),1998:2.[2]BayerChinaCo.98(The2ndChinaPolyurethane98InternationalPro2ceedings),1998:7.[3]YaoYG,YoshiokaM,ShiraishiN.MokuzaiGakkaishi,1993,39(8):930938.[4]YaoYG,YoshiokaM,ShiraishiN.MokuzaiGakkaishi,1995,41(7):659668.[5]GEJJ,ZhongW,etal.JournalofAppliedPolymerScience,2000,77:25752580.7912:(É)©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[6]YamaddaT.WoodIndustry,Japan,1999,54(1):2.[7]DoiY.BiodegradablePlasticsHandbook.NTC.Inc,Japan,1990:4546.[8]YamadaT,OnoH.BioresourceTechnology,1999,70:6167.[9](WUYi2ming).(CelluloseChemistry).:(Beijing:ChinaLightIndustryPress),2000:21.STUDIESONTHEBIODEGRADABLEPOLYURETHANEMATERIALSBASEDONBAGASSE(É)THELIQUEFACTIONOFBAGASSEANDPREPARATIONOFPOLYETHERESTERPOLYOLGEJin2jie,WURui,DENGBao2li,SHIXing2hai,WANGMing,LIWen2jun(KeyLaboratoryofMolecularEngineeringofPolymers,DepartmentofMacromolecularScience,FudanUniversity,Shanghai200433,China)ABSTRACT:Theliquefactionofbagassewasstudiedinordertoexploreanewwayforitsuse.Theconditionsofbagasseliquefaction,suchasliquefactionsolvent,liqued2solidratio,reactiontemperaturewereinvestigatedwhilethesulfuricacidasacatalyst.Itindicatedthattheliquefac2tionefficiencyof96%couldbereachedinPEG#400,andtheligninwasliquefiedcompletely.Theliquefiedproductisapolyetheresterpolyolanditshydroxylvalueis280mgKOHög380mgKOHög,whichmeansthattheproductcanbesatisfiedasamaterialformoderateintensitypolyurethanefoam.Keywords:bagasse;liquefaction;polyol;polyurethane(193continuedfromp.193)INTERFACIALINTERACTIONANDTENSILEFRACTUREBEHAVIOROFPPöPOEöBaSO4TERNARYCOMPOSITESLIZhen1,2,GUOShao2yun1,SONGWen2tao2(1TheStateKeyLaboratoryofPolymerMaterialsEngineering,PolymerResearchInstituteofSichuanUniversity,Chengdu610065,China;2ResinResearchInstituteofQiluPetrochemicalCo.SINOPEC,Zibo255400,China)ABSTRACT:Ternarycompositesofpolypropylene(PP)öethylene2octenecopolymer(POE)öbari2umsulfate(BaSO4)(PPöPOEöBaSO4)werepreparedthroughatwo2stepprocess:BaSO4master2batcheswerefirstpreparedthroughblendingofBaSO4andPOE,thenblendingwithPP.TwofamiliesofphasestructurewereconfirmedthroughSEMandDSC,dependingontheirinterfacial