ζ Potential at an air-water surface related to the critical micelle concentration of aqueous mixed surfactant systems

Alain Graciaa (1) , Patrice Creux (1) , Jean Lachaise (1) , J.L. Salager (2)

1 TEFC - Thermodynamique et Energétique des fluides complexes
2 Laboratorio FIRP

The spinning bubble tensiometer technique provides a handy tool to measure the ζ potential at the air-water surface. The method is used to estimate the variation of the ζ potential at the surface of aqueous solutions containing binary mixtures of surfactants (anionic, nonionic, and fluorocarbon anionic). The evidence on molecular interactions at the air-water surface is compared with the information deduced from the critical micelle concentration experimental data. The spinning bubble tensiometer technique provides a handy tool to measure the ζ potential at the air-water surface. The method is used to estimate the variation of the ζ potential at the surface of aqueous solutions containing binary mixtures of surfactants (anionic, nonionic, and fluorocarbon anionic). The evidence on molecular interactions at the air-water surface is compared with the information deduced from the critical micelle concentration experimental data.

Mots clés: Engineering controlled terms: Binary mixtures; Critical micelle concentration; Molecular dynamics; Solutions; Surfaces Engineering uncontrolled terms: Electrophoretic motion; Molecular interactions; Spinning bubble tensiometer Engineering main heading: Surface active agents EMTREE drug terms: surfactant Fluids engineering descriptors: air; aqueous solution; surfactant; water; zeta potential EMTREE medical terms: aqueous solution; article; foam; micelle; molecular interaction; oxygenator; surface property; technique

Domaines: Chimie-Physique [physics.chem-ph]

Alain Graciaa, Patrice Creux, Jean Lachaise, J.L. Salager. ζ Potential at an air-water surface related to the critical micelle concentration of aqueous mixed surfactant systems. Industrial and engineering chemistry research, 2000, 39 (8), pp.2677-2681. ⟨hal-00703338⟩