title: Effect of surfactants on the rate of growth of an air bubble by rectified diffusion.
abstract: The rectified diffusion growth of a single air bubble levitated in an acoustic field (frequency = 22.35 kHz) in water and in aqueous solutions containing surfactants (sodium dodecyl sulfate and sodium dodecylbenzene sulfonate) was investigated. As reported by Crum (J. Acoust. Soc. Am. 1980, 68, 203), the presence of surfactants at the bubble/liquid interface enhanced the growth rate of the bubble by rectified diffusion. It is suggested in this paper that in addition to the effect of surfactants on the surface tension and interfacial resistance to mass transfer, the effect of surface rheological properties may also contribute to the cause of the enhancement observed in the bubble growth rate.
authors.affiliation: Particulate Fluids Processing Centre, Department of Chemical and Biomolecular Engineering, School of Chemistry, University of Melbourne, VIC 3010 Parkville, Australia.
authors.forename: Judy
authors.initials: J
authors.lastname: Lee
authors.forename: Sandra
authors.initials: S
authors.lastname: Kentish
authors.forename: Muthupandian
authors.initials: M
authors.lastname: Ashokkumar
mesh_terms: D001557:Benzenesulfonates / Q000737:chemistry*; D012967:Sodium Dodecyl Sulfate / Q000737:chemistry*; D013501:Surface-Active Agents / Q000737:chemistry*
chemical_list: D001557:Benzenesulfonates; D013501:Surface-Active Agents; D012967:Sodium Dodecyl Sulfate; C001114:dodecylbenzenesulfonic acid