Adsorption Kinetics and Structural Arrangements of Cationic Surfactants on Silica Surfaces
The adsorption of cetyltrimethylammonium bromide (CTAB) to the silica-aqueous interface has been studied using optical reflectometry. The effect of pH, salt, and surface preparation on the surface excess and adsorption kinetics has been studied. The adsorption kinetics have been measured and compared to the theoretical diffusion limited flux of surfactant, the quotient being the `sticking ratio'. Analysis of the sticking ratio as a function of CTAB concentration reveals that the adsorption...[Show more]
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