明膠-蒙脫土納米復合材料的制備、性能及機理研究.pdf

1、天津大學碩士學位論文明膠蒙脫土納米復合材料的制備、性能及機理研究姓名：李萍申請學位級別：碩士專業(yè)：材料學指導教師：姚康德2001.12.1Abstract3“11ispaperlbcusodonusingintercalatedcolnpoundtechnologytoachievethenanodispersionofsilicatelayersofmontmorJlJonJte(MMT)inthegelatinmatrix，and‘

2、osvnthesizethegelatin／MMTnanocomposite，therefore，anewwayforhigh。performanceprotemsuchas2eJatinwasexploitedWiththeaidofXRDandTEM，themicrostructureel‘thecompositecanbeGhatacterized，andpropertiesofthecompositewerestudiedtoa

3、nalyzetheinfluenceofMMTMeanwhile，bythemeansofFTIR，F(xiàn)q二Romanand”CNMR，theinteIact／onbetweenthegroupsofcompositewerestudiedtohaveapreliminaryprobeintotheintercalationmechanism，andtheintercalationprocesscanalsobepredictedthro

4、ughmeasuringthechangedparametersdurin2theintercalationprocedure，andthenthethermodynamicswasinvestigatedFinally，thefactorsaffectingtheintercalationreactionwerediscussedandfavorablereactionconditionsweredeterminedTheresuRs

5、showedthatgelatinmoleculeshadalreadyinsertedintotileintedayersofMMT，andintercalatedorevenexfoliatedstructurehadbeenformedTheaddingofMMTwouldaffectthepropertiesofmatrixtosomeextent，forinstance，remarkablyimprovedthemechani

6、calpropertiesaswellaswetstrength，restlictedswellinganddegradationef／eclivelywithoutinfluencingtheswellingkinetics，weakenedthesensitiveresponseofgelatinmatrixtothesurroundingenvironmenthinderedthecollapseofgelatinnetwork，

7、buthadliltleeffectonfhechangeofthevolumephasetransitionpoint，andimprovethethermalpropertiesnotablyThestronginteractionbetween—NH3orCOO。ofgelatinmoleculesandionsintheinterlayerselMMTforcedthegelatinmoleculestoinsertedinto

8、theinterlayersofMMT，andlowmoleculemodelalsodemonstratedtheinteractionbetween—COO。andMMT’whichwasstrongerthanthebondcombinationbetweenNH3andMMTTheintercalationprocesscouldbedividedintotwostagesbymaximumflocculatingpoint，t

9、hatwereflocculationandintercalationstagesTheintercalationofgelatinwascontrolledbyenthalpythroughthermodynamicsanalysis，anddrivingforceforintercalationstemmedfromtheinteractionbetweengelatinnlolectflesandthesheetsofMMTGel

10、atinwithvariouspHcouldformintercalatedelpartiallyexfoliatednanocompositewithMM丁Whentheconcentrationofgelatinsolutionwasbelow10％intercalationproductsCOUIdbeobtaineddirectINforconcentrationexceeding10％twostepsshouldbeemplo

11、yedtoattaintheintercalatedstructureUltrasonicdispersedMMTcouldbeintercalatedeffectively，andtheionenvironmentintheinterfayersofMMTwasnotthedecisivefactorforintercalation、butaffectedtheintercalationresult，accordingtotheeff

12、ectofintercalation，K—MMTNa—MMTplistineMMTHMMTSuitablerangeoftemperature，stirringspeedaswellastheratiobetweengelatinandMMTwouldbenefittheintercalatioeactionandreactiontimehadIittleinfluenceontheeffectofintercalationKeywor