Adsorption of sodium dodecyl sulfate on kaolin from different alcohol-water mixtures
- Univ. of Bergen (Norway). Dept. of Chemistry
- Bergen Technological College (Norway)
The adsorption of surfactants on solid/liquid interfaces is a subject of great interest especially for enhanced oil recovery processes. The adsorption of sodium dodecyl sulfate (SDS) onto kaolin from different alcohol-water mixtures has been studied. The alcohols used were 1-propanol, 1-butanol, 1-pentanol, and 1-decanol containing 3.5 or 7 wt% water. In all cases the adsorption isotherms show a rather steep rise at low surfactant concentrations. Thereafter, there is a more or less continuous leveling off. The plateau adsorption of SDS on kaolin is found to increase with increasing chain length of the alcohol in the alcohol-water solvent. The adsorption properties are discussed in relation to the dielectric constant of the solvents; the aggregation properties of the surfactant in the bulk phase and the molecular packing of the surfactant in the adsorbed state are also considered.
- OSTI ID:
- 253746
- Journal Information:
- Journal of Colloid and Interface Science, Vol. 179, Issue 2; Other Information: PBD: 10 May 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
The effect of medium chain length alcohols on the micellar properties of sodium dodecyl sulfate in sodium chloride solutions
Electron spin resonance and electron spin echo modulation studies of N,N,N',N'-tetramethylbenzidine photoionization in sodium dodecyl sulfate micelles: structural effects of alcohol addition