VAPOR-LIQUID EQUILIBRIUM PROPERTIES OF SODIUM N-HEPTYL SULFONATE IN WATER AND IN AQUEOUS SOLUTIONS OF POLY(ETHYLENE GLYCOL) AT DIFFERENT TEMPERATURES

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SADEGHI R.; HOSSEINI R.

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Paper Information

Journal: JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS) Year:2010 | Volume:7 | Issue:3 Page(s): 621-629

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Title

VAPOR-LIQUID EQUILIBRIUM PROPERTIES OF SODIUM N-HEPTYL SULFONATE IN WATER AND IN AQUEOUS SOLUTIONS OF POLY(ETHYLENE GLYCOL) AT DIFFERENT TEMPERATURES

Author(s)

SADEGHI R. | HOSSEINI R. | Issue Writer Certificate

Keywords

SODIUM N-HEPTYL SULFONATE

POLY(ETHYLENE GLYCOL)

VAPOR-LIQUID EQUILIBRIA

WATER ACTIVITY

ISOPIESTIC

Abstract

The VAPOR-LIQUID EQUILIBRIA properties of SODIUM N-HEPTYL SULFONATE (C7SO3Na) in pure water and in aqueous poly(ethylene glycol) (PEG) solutions were determined at different temperatures below and above the critical micelle concentration (CMC). Vapor-liquid equilibrium data such as WATER ACTIVITY, vapor pressure, osmotic coefficient, activity coefficient and Gibbs free energies were obtained through ISOPIESTIC method. The concentration dependence of all investigated thermodynamic properties exhibit a change in slope at the concentration in which micelles are formed. It was found that the vapor pressure depression for a ternary aqueous C7SO3Na + PEG system is more than the sum of those for the corresponding binary solutions and, at higher temperatures, the higher concentration of PEG is in equilibrium with a certain concentration of surfactant.

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APA: Copy

SADEGHI, R., & HOSSEINI, R.. (2010). VAPOR-LIQUID EQUILIBRIUM PROPERTIES OF SODIUM N-HEPTYL SULFONATE IN WATER AND IN AQUEOUS SOLUTIONS OF POLY(ETHYLENE GLYCOL) AT DIFFERENT TEMPERATURES. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS), 7(3), 621-629. SID. https://sid.ir/paper/282463/en

Vancouver: Copy

SADEGHI R., HOSSEINI R.. VAPOR-LIQUID EQUILIBRIUM PROPERTIES OF SODIUM N-HEPTYL SULFONATE IN WATER AND IN AQUEOUS SOLUTIONS OF POLY(ETHYLENE GLYCOL) AT DIFFERENT TEMPERATURES. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS)[Internet]. 2010;7(3):621-629. Available from: https://sid.ir/paper/282463/en

IEEE: Copy

R. SADEGHI, and R. HOSSEINI, “VAPOR-LIQUID EQUILIBRIUM PROPERTIES OF SODIUM N-HEPTYL SULFONATE IN WATER AND IN AQUEOUS SOLUTIONS OF POLY(ETHYLENE GLYCOL) AT DIFFERENT TEMPERATURES,” JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS), vol. 7, no. 3, pp. 621–629, 2010, [Online]. Available: https://sid.ir/paper/282463/en

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