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物理化学学报 2010
混合胶束中gemini阳离子表面活性剂14-s-14与常规表面活性剂的协同作用:连接臂及反离子效应Keywords: mixedmicelle,geminisurfactant,conventionalsurfactant,criticalmicelleconcentration,degreeofcounterionbinding,synergisticinteraction Abstract: themixedmicelleformationofbinarycationic14-s-14geminiwithconventionalsinglechainsurfactantswasstudiedbyconductivitymeasurements.thecriticalmicelleconcentration(cmc)andthedegreeofcounterionbindingvalues(g)ofthebinarysystemsweredetermined.theresultswereanalyzedbyapplyingregularsolutiontheory(rst)tocalculatemicellarcompositions(x),activitycoefficients(f1,f2),andtheinteractionparameters(β).thesynergisticinteractionsofalltheinvestigatedcationicgemini+conventionalsurfactantcombinationswerefoundtobedependentuponthelengthofhydrophobicspacerofthegeminisurfactant.theexcessgibbsfreeenergyofmixingwasevaluated,anditindicatedrelativelymorestablemixedmicellesforthebinarycombinations.
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