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ID:36571973
大小:3.26 MB
页数:113页
时间:2019-05-12
《淀粉二元酸单酯类衍生物的合成与应用研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、大连理工大学博士学位论文淀粉二元酸单酯类衍生物的合成与应用研究姓名:邢国秀申请学位级别:博士专业:应用化学指导教师:杨锦宗;张淑芬20061001淀粉二元酸单酯类衍生物的合成与应用研究SynthesisandApplicationofStarchHalfEsterDerivativesAbstractStarchHallEsterDerivativessuch勰starchsuccinatehalfesterandstarchrealcatehalfestc才WCTCobtainedbystarchandbinaryan
2、hydride.Inthisthesis,starchsuccinatehalfesterandstarchmaleatehalfesterWel'epreparedbydrymetllodandmicrowave-assistedheatingdrymethod.rligllerreactione街ciencyanddegreeofsubstitutionofproductwereachievedindrymetllodcomparedtothatintraditionalwetmethod.Thisprovidesc
3、hancesforindustrialproductionandapplication.Compared、析tllconventionalheatingsynthesismethod.microwave—assistedsynthesismethodunderdrymediumwasarapidandenergysavingone诵tllhighreactionefficiency.ThestructuresofstarchsuccinatehalfesterandstarchmaleatehalfesterWerech
4、aracterizedbyFTRandNMRspectroscopy.Changesinthestarchgranulesbeforeandaftermodificationwerestudiedbyscanningelectronmicroscopy(SEM).Crosslinkedstarchsuccinatcs(ccs)werepreparedbyadryreaction.TheadsorptionbehaviorofcrosslinkedstarchsuccinatesforPb(Inwasinvestigate
5、d.Physicoehcmicalfactorssuchasequilibriumtime.temperatureandinitialsolutionpHvalueaffectingmagnitudeofPb(II)adsorptionwerestudied.n"iradsorptionbehaviorWasfoundtofollowlangmuirisotherm.TheadsorptioncapacityincreasedwithincreasingDSofCCS.Thethermodynamicinvestigat
6、iondemonstratedthattheadsorptionprocesswasendothermic.,111cnegativevaluesofAG9indicatedthatthefeasibilityofadsorptionincreases.FlocculationofkaolinsuspensionWasinvestigatedusingstarchmaleatehalfesterasfloeeulant.n把parametersoptimizedincludeddoseofflocculant,DSoff
7、locculant.viscosityofflocculant,pHvalueofkaolinsuspensiontemperatureintheprocess.UsingstarchmaleatehalfesterwithDSofO.07asflocculant,turbidityofkaolinsuspensionreducedto4.2NTUwhenthedoseofflocculantwas4ppm.TurbidityofkaolinsuspensionWas120NTUwhennofloeculantWaSus
8、ed.RemovalratioofturbidityWas96.3%.Itwasdemonstratedbytheexperimenttlmtstarchmaleatehalfester、析tIllow-costmaterials.simplepreparationprocessandgoodflocculation
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