Abstract
The paper focusses on the synthesis and characterization of choline chloride: urea (molar ratio 1:2) DES. The influence of the varying DES concentration on the surface and interfacial behavior of low-concentration commercial surfactant (cetyl trimethyl ammonium bromide) was examined. The incorporation of DES into the surfactant solution resulted in an augmentation of electrophoretic mobility and absolute zeta potential values, indicative of enhanced surfactant adsorption at the interface. Sessile drop measurements demonstrated the capacity of binary mixture to modify the wettability of sandstone from intermediate-wet state to water-wet condition. In summary, physicochemical evaluation revealed the capability of DES to augment the self-assembly and wetting behavior of surfactant at low concentrations (below critical micelle concentration). The observed phenomenon in these solvents primarily finds utility in nanoscience, drug delivery systems, colloids, catalysis, and applications in many other fields.
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