title: Enhanced foamability of sodium dodecyl sulfate surfactant mixed with superspreader trisiloxane-(poly)ethoxylate.
abstract: Gravitational drainage from thin vertical surfactant solution films and gravitational drainage in a settler column are used to study the behavior of foams based on two-surfactant mixtures. Namely, solutions of the anionic sodium dodecyl sulfate (SDS) and nonionic superspreader SILWET L-77, and their mixtures at different mixing ratios, are studied. It is shown, for the first time, that solutions having a longer lifetime in the vertical film drainage process also possess a higher foamability. An additional and unexpected unique result is that when using a mixed surfactant system, the foamability can be much greater than the foamabilities of the individual components.
authors.affiliation: Department of Mechanical and Industrial Engineering, University of Illinois at Chicago , 842 W. Taylor Street, Chicago, Illinois 60607-7022, United States.
authors.forename: S
authors.initials: S
authors.lastname: Sett
authors.forename: R P
authors.initials: RP
authors.lastname: Sahu
authors.forename: D D
authors.initials: DD
authors.lastname: Pelot
authors.forename: A L
authors.initials: AL
authors.lastname: Yarin