电导测定十二烷基苯磺酸钠的临界胶束浓度

Critical Micelle Concentration of the Solutionof SDBS Can Be Measured by ElectronicConductance

用电导法测定了十二烷基苯磺酸钠水溶液在２５，３２．５，４０℃时的临界胶束浓度．并且用相分离模型计算了形成临界胶束时的标准焓变ΔＨｍ。

Critic micelle concentration (C.M.C) of sodium dodecyl benzene sulfate (SDBS) at 25℃、32.5℃ and 40℃ can be measured by the method of electric conductance.The standand enthalpy change(ΔHm)、gibbs free energy change(ΔGm) and entropy change(ΔSm) can be calculated from calculation on phase separation model.