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Enhanced Oil Recovery using a Combination of Biosurfactants
Published on: June 3, 2022
Sugar Surfactant Based Microemulsions at Solid Surfaces: Influence of the Oil Type and Surface Polarity
Salomé Vargas-Ruiz1, Olaf Soltwedel2,3, Samantha Micciulla1
1Stranski-Laboratorium für Physikalische und Theoretische Chemie, Technische Universität Berlin , Straße des 17 Juni 124, D-10623 Berlin, Germany.
Abstract:
The structure of sugar-surfactant-based bicontinuous microemulsions in the bulk and at hydrophilic and hydrophobic solid planar surfaces was studied by means of neutron scattering techniques (SANS, NR, and GISANS). In particular, the influence of the type of oil (tetradecane and methyl oleate) on the structural properties in the vicinity of surfaces was investigated at different oil-to-water ratios. In the case of hydrophilic surfaces, the analysis of the scattering length density profiles reveals an induced ordering of the oil and water domains perpendicular to the solid-liquid interface in both sets of microemulsions. At hydrophobic surfaces, differences in the near-surface ordering between microemulsions containing polar and nonpolar oils are observed.
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