Abstract
Propyl gallate (PG) adsolubilization in the cationic surfactant micelles formed in the bulk solution and at the silica/solution interface has been investigated. It was found that in the absence of surfactant, propyl gallate does not adsorb on the silica surface from aqueous solution. However, in the presence of hexyltrimethylammonium bromide (CTAB), its uptake by silica strongly increases. The amount of PG in the surface layer depends on its concentration in the bulk solution and the amount of CTAB in the adsorbed layer.
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