The surface dilational viscosity of polypropylene glycol solutions and its influence on water flow and foam behavior

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dc.contributor.authorTan, S.
dc.contributor.authorJiang, A.
dc.contributor.authorLiau, J.
dc.contributor.authorGrano, S.
dc.contributor.authorHorn, R.
dc.date.issued2009
dc.description.abstractThe non-equilibrium interfacial properties of a homologous series of aqueous polypropylene glycol solutions (400-2000 g/mol) were investigated as a function of concentration to understand their role in determining foam behavior. The overflowing cylinder technique was used to generate a continually expanding surface. Static and dynamic surface tensions, as well as the surface velocity of the expanding surface, were characterized. The surface dilational viscosity was compared to water flow rate and foam retention time of the polypropylene glycol solutions reported in the literature. This study suggests that the surface dilational viscosity is a key parameter in the Marangoni effect which retards water drainage, resulting in wetter foam and increased water recovery across flowing foams. © 2009 Elsevier B.V. All rights reserved.
dc.description.statementofresponsibilityS.N. Tan, A. Jiang, J.J. Liau, S.R. Grano, R.G. Horn
dc.identifier.citationInternational Journal of Mineral Processing, 2009; 93(2):194-203
dc.identifier.doi10.1016/j.minpro.2009.08.004
dc.identifier.issn0301-7516
dc.identifier.urihttp://hdl.handle.net/2440/64374
dc.language.isoen
dc.publisherElsevier Science BV
dc.rights© 2009 Elsevier B.V. All rights reserved.
dc.source.urihttps://doi.org/10.1016/j.minpro.2009.08.004
dc.subjectPolypropylene glycol
dc.subjectFoam
dc.subjectOverflowing cylinder
dc.subjectFoam stability
dc.subjectWater recovery
dc.subjectSurface dilational viscosity
dc.titleThe surface dilational viscosity of polypropylene glycol solutions and its influence on water flow and foam behavior
dc.typeJournal article
pubs.publication-statusPublished

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