Effect of solubilization of CO/sub 2/ on the critical micelle concentration of sodium alkyl sulfonates

Conference · Fri Jan 01 04:00:00 UTC 1988

OSTI ID:5681349

Oates, T D; Schechter, R S ^[1]

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1. Dept. of Chemical Engineering, The Univ. of Texas at Austin, Austin, TX (US)

The critical micelle concentration (CMC) of aqueous solutions of octyl, decyl, and dodecyl sodium sulfonate have been measured as a function of CO/sub 2/ pressure. A thermodynamic model which describes the observed decline in CMC and determines the mole fraction of CO/sub 2/ in the micelle is presented. This model is then tested against reported solubility data of other gases in sodium alkyl sulfate solutions and found to be in reasonable agreement. Based on these results it appears that the concept of a micelle Laplace pressure is not necessary to explain solubilization in micelles.

• OSTI ID: 5681349
• Report Number(s): CONF-880348--
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
ALKYL RADICALS
AQUEOUS SOLUTIONS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
DISPERSIONS
DISSOLUTION
MATHEMATICAL MODELS
MICELLAR SYSTEMS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RADICALS
SODIUM COMPOUNDS
SOLUTES
SOLUTIONS
SULFONATES
THERMODYNAMICS