Micelle Formation of Phosphate-Type Hybrid Surfactants in Aqueous Solution

Abstract

Micelle formation in aqueous solution of novel hybrid surfactants with phosphate head group was investigated. The critical micelle concentrations (CMC) were determined as a function of temperature by surface tension measurements. The results of electrical conductivity measurements were analyzed according to the mixed electrolyte model of the micellar solution to estimate the micellar aggregation number and the degree of counter-ion binding on the micelle. Thermodynamic parameters for the micelle formation were estimated on the basis of these results. Discussion is given on the micelle formation of the present surfactant species comparing with the sulfonate-type hybrid surfactants.

Solubility of Monoalkyl Phophate in Water in the Presence of Arginine and Triton, and Solubilization of Methyl Yellow Through the Mixed Micelle

“…Although both Arg and potassium hydroxide (KOH) are base, their effect on solubility of MAP was different. The reason was briefly considered from the viewpoints that the MAP is a weak dibasic acid and has a long alkyl chain in its molecular structure 9,10 . Solubilizing power of the mixed micelle against a water-insoluble dye methyl yellow (MY) was also discussed.…”