Coupled diffusion of mixed ionic micelles in aqueous sodium dodecyl sulfate + sodium octanoate solutions

Article Abstract:

A simple treatment of mixed surfactant diffusion developed on the basis of NP equations for the fluxes of free surfactant monomers, free counterions and a single micelle species of locally averaged composition is presented. Taylor dispersion and differential refractometry are used to calculate ternary mutual diffusion coefficient for aqueous sodium dodecyl sulfate + sodium octanoate solutions.

All Other Basic Inorganic Chemical Manufacturing, Potassium & Sodium Compounds, Sodium & Sodium Compounds, Micelles, Sodium compounds

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Coupled diffusion of mixed methanol+ethanol clusters in carbon tetrachloride solutions

Article Abstract:

The coupled diffusion of mixed alcohols in a nonpolar solvent is studied by measuring ternary mutual diffusion coefficients for methanol + ethanol in carbon tetrachloride solutions. The results are interpretated by relating the measured total alcohol fluxes to the fluxes of the alcohol monomers and associated species.

Alcohols

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Nucleophilic substitution reaction at liquid/liquid interfaces: Molecular dynamics simulation of a model S(sub N)1 dissociation reaction at the water/carbon tetrachloride interface

Article Abstract:

A detailed study of the dissociation step of a model S(sub N)1reaction at the water/carbon tetrachloride interface is presented. The findings suggest a significant increase of the ionic dissociation barrier height and of the reaction free energy at the interface relative to bulk water.

Analysis, Molecular dynamics, Dissociation, Dissociation reactions

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