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Issue 36, 2014
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Influence of interfacial rheology on drainage from curved surfaces

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Abstract

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.

Graphical abstract: Influence of interfacial rheology on drainage from curved surfaces

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Publication details

The article was received on 20 Nov 2013, accepted on 11 Feb 2014, published on 11 Feb 2014 and first published online on 11 Feb 2014


Article type: Paper
DOI: 10.1039/C3SM52934G
Citation: Soft Matter, 2014,10, 6917-6925
  • Open access: Creative Commons BY license
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    Influence of interfacial rheology on drainage from curved surfaces

    M. S. Bhamla, C. E. Giacomin, C. Balemans and G. G. Fuller, Soft Matter, 2014, 10, 6917
    DOI: 10.1039/C3SM52934G

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