Show simple item record

dc.contributor.authorLi, Erqiang
dc.contributor.authorVakarelski, Ivan Uriev
dc.contributor.authorChan, Derek Y. C.
dc.contributor.authorThoroddsen, Sigurdur T
dc.date.accessioned2015-08-03T11:54:07Z
dc.date.available2015-08-03T11:54:07Z
dc.date.issued2014-05-02
dc.identifier.issn07437463
dc.identifier.pmid24761748
dc.identifier.doi10.1021/la500868y
dc.identifier.urihttp://hdl.handle.net/10754/563545
dc.description.abstractUsing high-speed video recording of bubble rise experiments, we study the stability of thin liquid films trapped between a rising bubble and a surfactant-free liquid-liquid meniscus interface. Using different combinations of nonpolar oils and water that are all immiscible, we investigate the extent to which film stability can be predicted by attractive and repulsive van der Waals (vdW) interactions that are indicated by the relative magnitude of the refractive indices of the liquid combinations, for example, water (refractive index, n = 1.33), perfluorohexane (n = 1.23), and tetradecane (n = 1.43). We show that, when the film-forming phase was oil (perfluorohexane or tetradecane), the stability of the film could always be predicted from the sign of the vdW interaction, with a repulsive vdW force resulting in a stable film and an attractive vdW force resulting in film rupture. However, if aqueous electrolyte is the film-forming bulk phase between the rising air bubble and the upper oil phase, the film always ruptured, even when a repulsive vdW interaction was predicted. We interpret these results as supporting the hypothesis that a short-ranged hydrophobic attraction determines the stability of the thin water film formed between an air phase and a nonpolar oil phase. © 2014 American Chemical Society.
dc.description.sponsorshipE.Q.L. is grateful for a SABIC Postdoctoral Fellowship. This work is supported in part by an Australian Research Council Discovery Project Grant to D.Y.C.C.
dc.publisherAmerican Chemical Society (ACS)
dc.titleStabilization of thin liquid films by repulsive van der waals force
dc.typeArticle
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentHigh-Speed Fluids Imaging Laboratory
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.identifier.journalLangmuir
dc.contributor.institutionDepartment of Mathematics and Statistics, University of Melbourne, Parkville, VIC 3010, Australia
dc.contributor.institutionDepartment of Chemistry and Biotechnology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
kaust.personLi, Erqiang
kaust.personVakarelski, Ivan Uriev
kaust.personThoroddsen, Sigurdur T.
dc.date.published-online2014-05-02
dc.date.published-print2014-05-13


This item appears in the following Collection(s)

Show simple item record