氨基酸型-甜菜碱型表面活性剂黏弹性胶束体系研究-王进爽

436201312ChinaSurfactantDetergent＆CosmeticsVol．43N[e-mail]。[e-mail]。/121211．2002372．201702LSCHSB。CHSBLS、pHNaCl。pH=5.1mCHSB∶mLS=8∶424500mPa·sNaCl4.0%NaCl、pHNaClJeffreys。TQ423A1001－1803201306－0405－05Viscoelasticmicellesystemcomposedbyamino－acidbasedsurfactantandbetaintypesurfactantWANGJin－shuang1YUANMin－jia2LUHai－wei1GUOYi－guang2FANGBo11．LabofＲheologyCollegeofChemicalEngineeringEastChinaUniversityofScienceandTechnologyShanghai200237China2．ShanghaiJahwaUnitedCompanyLtdShanghai201702ChinaAbstractAviscoelasticmicellesystemwasformedbyblendingofanamino－acidbasedsurfactantsodiumlauroylsarcosinateLSandanamphotericsurfactantcocoamidopropylhydroxysulfobetaineCHSB．EffectsofmassratioofLStoCHSBpHandamountofNaCladdedontheviscosityofthesystemandrheologicalpropertiesofthesystemwerecompared．Ｒesultsshowedthatviscosityofthesystemachievesamaximumvalueas24500mPa·sandareaofthethixotropicloopincreasesconsiderablyunderconditionsaspH=5.1andmCHSB∶mLS=8∶4．WhenNaClmassfractioninthesystemislessthan4.0%additionofNaClintothesystemwillresultinincreaseoftheviscosityofthesystem．MoreoverchangeofthemassratiopHaswellasNaClcontentwillcausechangeofelasticmodulusandviscousmodulusofthemicellesystemmorethanadozentimes．Thisphenomenoncanindicatethatthemicellesystemexhibitsshearthinningpropertyandnonlinearco－rotationalJeffreysconstitutiveequationcanbeappliedtocharacterizeitsflowpattern．Keywordssurfactantamino－acidbasedbetaintypeviscoelasticmicellesrheologicalproperties1、、、、、pH2－9。、、、10。、、、11－13。、、、14－15。Ｒekha16Sampad17。LSCHSB、pH·504·43。11.1LSw=30%wNaCl=0.1%CHSBw=30%wNaCl=5.0%NaClw=99%。PL4002、S20pH－ＲW20digitalIKAIncucell3MDV－2ProBrookfieldPhysicaMCＲ101AntonPaar。1.21.2.1CHSB/LS10mgLSCHSBNaOHpHNaCl25℃24h。1.2.225℃24hDV－2Pro。1.2.3PhysicaMCＲ101CP25－1－SN1066524.955mm1.001°25℃。γ=1.0%ω=1～100rad·s－1γ·0s－1100s－140s100s－10s－140s1～1000s－1。22.1CHSBLS、pHNaCl2.1.1CHSBLS12%25℃pH=5.1NaCl1.5%CHSBLS1。1mCHSB∶mLSmCHSB∶mLS=8∶424500mPa·s。CHSBLSCHSBLS。mCHSB∶mLS=8∶4。1CHSBLSTab.1ViscosityofCHSB/LSsystemswithdifferentmassratiosmCHSB∶mLS12∶09∶38∶47∶56∶65∶74∶83∶90∶12η/mPa·s2071024500130007101608055202.1.2pHpH=4～725℃pHmCHSB∶mLS=8∶4。pH＜4.9LSpH＞5.6。pH=4.9～5.61。1pHpH=5.1。CHSBLSpH、CHSBLS。pH=5.1CHSBLSCHSBLS。pH=5.1。1pHFig.1Viscosityvs．pHofCHSB/LSsystem2.1.3NaCl25℃pH=5.1mCHSB∶mLS=8∶4NaCl1.3%·604·6/NaCl2。2NaClFig.2ViscosityofCHSB/LSsystemvs．massfractionofNaCl2NaCl。4.0%NaClNaCl、。NaCl4.0%NaCl。NaCl4.0%。2.22.2.125℃4CHSB/LS3。3apH=5.1mCHSB∶mLS=9∶3NaCl1.5%。3bpH=5.1mCHSB∶mLS=8∶4。3cpH=5.6mCHSB∶mLS=8∶43bpH。3dNaCl4.0%NaCl3b。amCHSB∶mLS=9∶3pH=5.1wNaCl=1.5%bmCHSB∶mLS=8∶4pH=5.1wNaCl=1.3%cmCHSB∶mLS=8∶4pH=5.6wNaCl=1.3%dmCHSB∶mLS=8∶4pH=5.1wNaCl=4.0%3CHSB/LSFig.3ThixotropicpropertiesofCHSB/LSmicellesystemsunderdifferentconditions·704·432.2.225℃4CHSB/LS。CHSB/LSCHSB/LSJeffreys18ηγ·ηγ·=η01+λ1λ2γ·21+λ1γ·211η0Pa·sλ1λ2sλ1＞λ2。2FxXiYinFx=Σnt=1Yi－Xi2槡/n22JeffreysCHSB/LSTab.2ParametersofviscositycurvesofCHSB/LSmicellesystemfittedbynonlinearco－rotationalJeffreysmodelmCHSB∶mLSpHwNaCl/%η0/Pa·sλ1×10－2/sλ2×10－3/sFx9∶35.11.51.1151.432.240.0528∶45.11.39.0176.021.920.1998∶45.61.32.5062.742.660.1118∶45.14.013.4006.222.160.2022FxCHSB/LSJeffreys。2.2.325℃γ=1.0%4CHSB/LSG'、G″tanδ=G″/G'4。4G'G″tanδtanδ＞1tanδ＜1。44CHSB/LSFig.4ViscoelasticityofCHSB/LSmicellesystemsunderdifferentconditions4pH=5.1mCHSB∶mLS=8∶4G'G″mCHSB∶mLS=9∶3G'G″tanδ1。mCHSB∶mLS=8∶4NaCl4.0%mCHSB∶mLS=8∶4pH5.65.1G'G″。CHSB/LSmCHSB∶mLSpHNaCl。31LSCHSB。CHSB/LS、pHNaCl。12%pH=5.1mCHSB∶mLS=8∶424500mPa·s。2CHSB/LSpH、NaCl、·804·6/－。CHSB/LSpH=5.1Jeffreys。1．、ⅡJ．2008386400－408．2PAWELW．TheinfluenceofthesizeofthehydrophilicgrouponthemiscibilityofzwitterionicandnonionicsurfactantsinmixedmonolayersandmicellesJ．JColloidInterfSci20073161107－113．3ＲOMAINBJUEＲGENTKＲISTEＲH．Ｒoleofanamidebondforself－assemblyofsurfactantsJ．Langmuir20102653077－3083．4．J．20033268－10．5．－NaClJ．2006357535－537．6HASSAMPAＲAGHAVANSＲKALEＲE．MicrostructurechangeinSDSmicellesinducedbyhydrotropicsaltJ．Langmuir20021872543－2548．7CAOQZHENGLQLIGZetal．Ｒheologicalpropertiesofviscoelas-ticmicellesinsodiumoleatesolutioninducedbysodiumionJ．ColloidsandSurfaceA2008312132－38．8MIYAGISHISTAKEUCHINASAKAWATetal．MicellargrowthofN－dodecanoylal－uminateswithdifferentcounterionsanditsquanti-tativerelationwithsomefactorsJ．ColloidsandSurfacesAPhysico-chemEngAspects20021971125－132．9TANNEＲSDAIMEEMKSＲINIVASAＲＲ．Self－assemblyofsurfactantvesiclesthattransformintoviscoelasticviscoelasticmicellesuponheatingJ．JAmChemSoc2006128206669－6675．10．J．1999534－41．11DＲEISSCA．ViscoelasticmicellesWheredowestandＲecentdevelopmentslinearrheologyandscatteringtechniquesJ．SoftMatter200731956－960．12LINZＲ．ViscoelasticmicellesandtheirnetworksJ．Langmuir19961271729－1737．13DUＲGAPAHIＲONBUK．ViscoelasticmicellesinmixedsurfactantsolutionJ．AdvinColloidInterfSci20061231401－403．14MAＲIAＲILOUＲDESPAUＲOＲAP．Aminoacid－basedsurfac-tantsJ．ComptesＲendusChimie2004617583－592．15．N－J．200636294－98．16ＲEKHAGSLOKKS．Formationofviscoelasticmicelleinamixedamino－acidbasedanionicsurfactantandcationicsurfactantsystemsJ．JColloidI