Vapor-Liquid Equilibrium Properties of Sodium n-Heptyl Sulfonate in Water and in Aqueous Solutions of Poly(ethylene glycol) at Different Temperatures
作者： R. Sadeghi , R. Hosseini
DOI: 10.1007/BF03246050
关键词:
摘要: The vapor-liquid equilibria properties of sodium n-heptyl sulfonate (C7SO3Na) in pure water and aqueous poly(ethylene glycol) (PEG) solutions were determined at different temperatures below above the critical micelle concentration (CMC). Vapor-liquid equilibrium data such as activity, vapor pressure, osmotic coefficient, activity coefficient Gibbs free energies obtained through isopiestic method. dependence all investigated thermodynamic exhibit a change slope which micelles are formed. It was found that pressure depression for ternary C7SO3Na + PEG system is more than sum those corresponding binary and, higher temperatures, with certain surfactant.
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