Aggregation Behavior and Micellar Properties of Sodium Salts of Naphthenic Acid Mixtures

• DOI: 10.1007/s11743-014-1596-z
• Publication Date: 2014-06-10T20:46:27Z
• Authors: Dejan Ćirin; Mihalj Poša; Ljubica Grbović; Ksenija Pavlović; Bojana Vasiljević
• Keywords: Naphthenic acid; Aggregation number

Abstract The aim of this study was to investigate micellar and self‐assembly properties four sodium salts naphthenic acid mixtures by determination comparative analysis their critical micelle concentration values at seven different temperatures ranging from 10 40 °C using spectrofluorophotometric measurements. It concluded that fractions having the lowest percentage aliphatic structures give least flexible micelles due sterically rigid structure cyclic side chains, what makes them difficult pack in core. Additionally, surface aqueous solutions investigated were studied maximum excess, Γ max minimum area per surfactant molecule ( A min ) values.