Phase behavior, dynamics of percolation, and energetics of droplet clustering in water/AOT/n-heptane system influenced by additives (sodium cholate and sodium salicylate)

Article Abstract:

The volume- and temperature-induced percolation of a water in oil microemulsion system of water/AOT/n-heptane, as well as the phase behavior were studied in detail in the presence and absence of sodium salicylate and sodium cholate. Non-agreement with the predicted values were observed in the scaling parameters. An estimation of the energetics of droplet clustering leading to percolation was also done. Diffusion coefficient and polydispersity were estimated in the pre- and postpercolation stages.

Dispersion, Dispersion (Optics), Emulsions, Percolation

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Physicochemical studies on microemulsions. 7. Dynamics of percolation and energetics of clustering in water/AOT/isooctane and water /AOT/decane w/o microemulsions in presence of hydrotopes(sodium salicylate, alpha-naphthol, resorcinol, catechol, hydroquinone, pyrogallol and urea) and bile salt(sodium cholate)

Article Abstract:

The study of the temperature induced percolation of w/o microemulsions (water/AOT/isooctane and water/AOT/decane) at different (water)/(AOT) mole ratios in the presence of hydrotypes and the bile salt sodium cholate is presented. The threshold percolation temperature is quantified by analyzing the results and the performance of scaling equation, the activation energy for the percolation process and the thermodynamics of the clustering of dispersed nanodroplets.

Water chemistry, Thermal properties, Thermodynamics, Chemical properties, Sodium chloride

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A critical assessment of micellization of sodium dodecyl benzene sulfonate (SDBS) and its interaction with poly(vinyl pyrrolidone) and hydrophobically modified polymers, JR 400 LM 200

Article Abstract:

The self-aggregation of sodium dodecyl benzene sulfonate (SDBS) and its solution behaviors are critically assessed by conductometric, tensiometric, spectrophotometric, flourimetric, and calorimetric methods. A method of simulation is used to evaluate the aggregation number and the free energy of micellization according to the mass action model.

Analysis, Polymers, Sulfur, Chemistry, Physical and theoretical, Physical chemistry, Micelles, Properties, Sulphur

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