Influence of interfacial rheology on drainage from curved surfaces

M.S. Bhamla, C.E. Giacomin, C. Balemans, G.G. Fuller

Research output: Contribution to journalArticleAcademicpeer-review

62 Citations (Scopus)
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Thin lubrication flows accompanying drainage from curved surfaces surround us (e.g., the drainage of the tear film on our eyes). These draining aqueous layers are normally covered with surface-active molecules that render the free surface viscoelastic. The non-Newtonian character of these surfaces fundamentally alters the dynamics of drainage. We show that increased film stability during drainage can occur as a consequence of enhanced surface rheology. Increasing the surfactant layer viscosity decreases the rate of drainage; however, this retarding influence is most pronounced when the insoluble surfactant layer has significant elasticity. We also present a simple theoretical model that offers qualitative support to our experimental findings
Original languageEnglish
Pages (from-to)6917-6925
Number of pages9
JournalSoft Matter
Publication statusPublished - 2014


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