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The Effect of Head-Group on Selective Counterion Binding to Cationic Surfactants
Ist Teil von
Journal of colloid and interface science, 1997-09, Vol.193 (2), p.312-314
Ort / Verlag
San Diego, CA: Elsevier Inc
Erscheinungsjahr
1997
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Selectivity coefficients for the competitive adsorption of chloride, bromide, and iodide at the air/solution interface have been measured by a high accuracy ion flotation technique using the surfactant cations dodecylammonium, dodecylmethylammonium, dodecyldimethylammonium, and dodecyltrimethylammonium. Selective binding was found to depend on the nature of the head group, with selectivity increasing from primary to quaternary ammonium ions. Results are consistent with counterion binding arising from contact adsorption by mutual dehydration of head groups and counterions.