邻甲氧基肉桂酸对甲基纤维素2f表面活性剂溶液凝胶化行为的影响

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1、Abs廿actABSTRACTThegelationbehaviorofthethermallyinducedgelincomplexmediumhasgotveryimportantscientificsignificanceandapplicationvalue．Whenwestudiedthegelationbehaviorofmethylcellulose(MC)inthecoexistenceofCTABandNaCl，wefoundthattheeffectofCTABonthegelationofMCSOhtionwasshieldedintheexist

2、enceofNaCl．Wethinkit’SduetothatCTABformedmicellesinaqueousphaseinducedbyNaClanditwouldnolongeradsorbonthemethylcellulosechain．Sincetheexperimentalevidenceswereunsatisfactory,weusedOMCAinsteadofNaCl，expectedtousethedi【fferenceof0MCAstructureandtheabilitytoinducetoformmicellesbeforeandafte

3、rUVirradiationtoconfirmourdeduction．SurprisedtofindthatOMCAself-assembledtoformcore．shellstructurewithmethylcellulose．Thismasterthesisfocusesontheeffectofsaltsonthesol-geltransitionofMC．surfactantcomplexsolutionsusingrheologicalmeasurement．Wefirststudytheeffectof0MCAonthes01．geltransitio

4、nofMCsolutionandMC／CTABsolution．Thenthes01．geltransitionofMC／OMCAcomplexsolutioninthepresenceofalcoholsofdifferentchainlengthshasbeeninvestigated．ThemainachievementsaresummarizedasfolloWS"1．BothOMCAandTTABhadasignificantonthegelationbehaviorofMCsolution．IntheexistenceofTTABorOMCA．thegela

5、tiontemperatureMCsolutiongraduallyincreasedwiththeconcentrationofeachincreased．OnceinthecoexistenceofTTABandOMCA．thegelationtemperatureofMCsolutionwouldnolongerdependontheconcentrationofT瑚．TheeffectofOMCAonthegelationofMCsolutionwascloselyrelatedtothecore—shellaggregateswhichwereformedby

6、OMCAmoleculesabsorbedontheMCchainsthroughhydrophobicinteraction．Here，methylsontheMCchainsactedascores，andOMCAmoleculesactedasshells．NotonlythehydrophobicinteractionbetweendifferentmethylsontheMCchainshasbeenshieldedbythecore．shellsteucture，resultingintheincreaseofthegelationtemperatureof

7、MCsolution，butalsothehydrophobicinteractionbetweenTTABandmethylsontheMCchainshasbeenshielded．WhentheconcentrationofOMCAmaintainedafixedvalue，thegelationtemperatureofMCsolutionremainedunchangedwiththeconcentrationofTTABincreased．ComparedwiththeabilityofIIIAbstractOMCAdisso