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Interfacial mechanisms for stability of surfactant-laden films

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dc.affiliation.dptoUC3M. Departamento de Ingeniería Mecánicaes
dc.contributor.authorBhamla, M. Saad
dc.contributor.authorÁlvarez Valenzuela, Marco Antonio
dc.contributor.authorTajuelo, Javier
dc.contributor.authorFuller, Gerald G.
dc.contributor.funderMinisterio de Educación, Cultura y Deporte (España)es
dc.date.accessioned2023-10-06T09:09:20Z
dc.date.available2023-10-06T09:09:20Z
dc.date.issued2017-05-17
dc.description.abstractThin liquid films are central to everyday life. They are ubiquitous in modern technology (pharmaceuticals, coatings), consumer products (foams, emulsions) and also serve vital biological functions (tear film of the eye, pulmonary surfactants in the lung). A common feature in all these examples is the presence of surface-active molecules at the air-liquid interface. Though they form only molecular-thin layers, these surfactants produce complex surface stresses on the free surface, which have important consequences for the dynamics and stability of the underlying thin liquid film. Here we conduct simple thinning experiments to explore the fundamental mechanisms that allow the surfactant molecules to slow the gravity-driven drainage of the underlying film. We present a simple model that works for both soluble and insoluble surfactant systems in the limit of negligible adsorption-desorption dynamics. We show that surfactants with finite surface rheology influence bulk flow through viscoelastic interfacial stresses, while surfactants with inviscid surfaces achieve stability through opposing surface-tension induced Marangoni flows.en
dc.description.sponsorshipThe authors received no specific funding for this work. However, J. T. acknowledges a personal grant from UNED's Researchers Formation Program and partial support from MINECO (Grant FIS2013-47350-C5-5-R).en
dc.format.extent14
dc.identifier.bibliographicCitationBhamla MS, Chai C, Àlvarez-Valenzuela MA, Tajuelo J, Fuller GG (2017) Interfacial mechanisms for stability of surfactant-laden films. PLoS ONE 12(5): e0175753.en
dc.identifier.doihttps://doi.org/10.1371/journal.pone.0175753
dc.identifier.issn1932-6203
dc.identifier.publicationfirstpage1
dc.identifier.publicationissue5, e0175753
dc.identifier.publicationlastpage14
dc.identifier.publicationtitlePLoS Oneen
dc.identifier.publicationvolume12
dc.identifier.urihttps://hdl.handle.net/10016/38564
dc.identifier.uxxiAR/0000020075
dc.language.isoengen
dc.publisherPLOSen
dc.relation.projectIDGobierno de España. FIS2013-47350-C5-5-Res
dc.rights© 2017 Bhamla et al.en
dc.rightsAtribución 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subject.ecienciaBiología y Biomedicinaes
dc.subject.ecienciaFísicaes
dc.subject.ecienciaIngeniería Industriales
dc.subject.ecienciaIngeniería Mecánicaes
dc.subject.ecienciaQuímicaes
dc.titleInterfacial mechanisms for stability of surfactant-laden filmsen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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