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Very slow surfactant adsorption at the solid-liquid interface is due to long lived surface aggregates

Howard, Shaun; Craig, Vincent


Until recently it was believed that surfactant adsorption was completed very rapidly, but now it is understood that following the initial rapid adsorption of surfactant a much slower adsorption process can continue for many hours. Adsorption isotherms for cetyltrimethylammonium bromide (CTAB) on silica have been measured using optical reflectometry (OR) in the absence and presence of 1 mM and 10 mM KBr. Adsorption from bulk concentrations ranging from 0.3 to 1 × cmc showed evidence of slow...[Show more]

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
Source: Soft Matter
DOI: 10.1039/b903768c


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