淀粉二元酸单酯类衍生物的合成与应用研究(I)

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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WCTCobtainedbystarchandbinaryanhyd

2、ride．Inthisthesis，starchsuccinatehalfesterandstarchmaleatehalfesterWel'epreparedbydrymetllodandmicrowave-assistedheatingdrymethod．rligllerreactione街ciencyanddegreeofsubstitutionofproductwereachievedindrymetllodcomparedtothatintraditionalwetmethod．Thisprovideschances

3、forindustrialproductionandapplication．Compared、析tllconventionalheatingsynthesismethod．microwave—assistedsynthesismethodunderdrymediumwasarapidandenergysavingone诵tllhighreactionefficiency．ThestructuresofstarchsuccinatehalfesterandstarchmaleatehalfesterWerecharacteriz

4、edbyFTRandNMRspectroscopy．Changesinthestarchgranulesbeforeandaftermodificationwerestudiedbyscanningelectronmicroscopy(SEM)．Crosslinkedstarchsuccinatcs(ccs)werepreparedbyadryreaction．TheadsorptionbehaviorofcrosslinkedstarchsuccinatesforPb(Inwasinvestigated．Physicoehc

5、micalfactorssuchasequilibriumtime．temperatureandinitialsolutionpHvalueaffectingmagnitudeofPb(II)adsorptionwerestudied．n"iradsorptionbehaviorWasfoundtofollowlangmuirisotherm．TheadsorptioncapacityincreasedwithincreasingDSofCCS．Thethermodynamicinvestigationdemonstrated

6、thattheadsorptionprocesswasendothermic．，111cnegativevaluesofAG9indicatedthatthefeasibilityofadsorptionincreases．FlocculationofkaolinsuspensionWasinvestigatedusingstarchmaleatehalfesterasfloeeulant．n把parametersoptimizedincludeddoseofflocculant,DSofflocculant．viscosit

7、yofflocculant，pHvalueofkaolinsuspensiontemperatureintheprocess．UsingstarchmaleatehalfesterwithDSofO．07asflocculant,turbidityofkaolinsuspensionreducedto4．2NTUwhenthedoseofflocculantwas4ppm．TurbidityofkaolinsuspensionWas120NTUwhennofloeculantWaSused．Removalratioofturb

8、idityWas96．3％．Itwasdemonstratedbytheexperimenttlmtstarchmaleatehalfester、析tIllow-costmaterials．simplepreparationprocessandgoodflocculation