Equilibrium and dynamics of soluble surfactant penetration into a Langmuir monolayer of a 2D aggregating homologue

Article Abstract:

A theoretical and experimental study was conducted that related to research on the use of insoluble-soluble-amphiphile-consisting mixed monolayers to investigate the penetration of insoluble monolayers by a soluble surfactant or protein. The study investigated a simple system consisting of the mixed monolayer of an insoluble, C=20, and soluble, C=12 homologue of dimethylphosphide oxide. It was shown that both the effect of a soluble component on the attributes of the aggregated equilibrium and the effect of the surface pressure increase of the mixed monolayer can be analyzed.

Research, Case studies, Monomolecular films, Surface active agents, Electrical conductivity, Surface chemistry, Tunneling (Physics)

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Adsorption from mixed ionic surfactant/protein solutions: Analysis of ion binding

Article Abstract:

A thermodynamic model is derived for the description of the equilibrium behavior of mixtures of a protein with an ionic surfactant adsorbed at the liquid/fluid interface. The experimental data for the mixtures HSA/CTAB (human serum albumin/cetyl trimethylammonium bromide) and beta-LG/SDS (beta-lactoglobulin/sodium dodecyl sulfate) agree satisfactorily with the theoretical estimates.

Methods, Adsorption, Chemical properties

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