Surface Properties and Thermodynamic Properties of Micellization in Binary Mixtures of Surfactants
Abstract：The surface properties and thermodynamic parameters of micellization for binary systems of oleylpolyoxyethylene（10）（Brij97）/sucrose stearate,oleylpolyoxyethylene（20）（AEO20）/sucrose stearate and Brij97/Lecithin were calculated from surface tension data.The effect of temperature on mixed systems which molar fraction is 0.5were discussed.The results reveal that the three investigated systems show non-ideality in the micelle formation.The three systems have been showed（1）Compared with AEO20,Brij97can enhance the surface properties of sucrose stearate obviously.the larger the mole fraction of Brij97,the decreasinger the CMC,γCMC and free energy（ΔGom）of micellization in Brij97/su-crose steatite mixed surfactants.（2）The surface properties and the capacity of forming micelle are de-creased by Lecithin and sucrose steatite,and the effect of Lecithin on Brij97is obvious.（3）in the range of 25℃to 45℃,the three mixed systems form micelle easily as the temperature increase.
Keywords：surfactant mixturessurface propertiesCMCthermodynamic parameters(ΔGom、ΔHom、ΔSom)
Publication Date：2012-01-01
Online Publishing Date：2026-08-28(First online date of this platform, not the publication date of the document)
Pages：6( 46-51 )