Friction Force Spectroscopy of β- and κ-casein monolayers

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Friction Force Spectroscopy of β- and κ-casein monolayers

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dc.contributor.author Sotres, Javier
dc.contributor.author Svensson, Olof
dc.contributor.author Arnebrant, Thomas
dc.date.accessioned 2011-02-18T09:43:07Z
dc.date.available 2011-02-18T09:43:07Z
dc.date.issued 2011 en_US
dc.identifier.issn 0743-7463 en_US
dc.identifier.uri http://hdl.handle.net/2043/11739
dc.description.abstract Friction force spectroscopy (FFS) has been applied to study the tribological properties of β- and κ-casein layers on hydrophobic substrates in aqueous solutions. Nanometer-sized imaging tips were employed. This allowed exerting and determining the high pressures needed to remove the layers, and registering the topographic evolution during this process. Both β- and κ-casein layers showed similar and not particularly high initial frictional responses (friction coefficient of ~1 when measure with a silicon nitride tip). The pressures needed to remove the layers were of the same order of magnitude for both proteins, ~1e8 Pa, but slightly higher for those composed of β-casein. The technique has also shown to be useful in studying the two-dimensional lateral diffusion of the proteins and the wear on the layers they form. en_US
dc.format.extent 12
dc.language.iso eng en_US
dc.publisher American Chemical Society en_US
dc.subject atomic force microscopy en_US
dc.subject friction force spectroscopy en_US
dc.subject friction en_US
dc.subject wear en_US
dc.subject caseins en_US
dc.subject.classification Sciences en_US
dc.title Friction Force Spectroscopy of β- and κ-casein monolayers en_US
dc.type Article, peer reviewed scientific en_US
dc.contributor.department Malmö University. Faculty of Health and Society en
dc.identifier.doi 10.1021/la1043377 en_US
dc.subject.srsc Research Subject Categories::NATURAL SCIENCES en_US
dc.relation.ispartofpublication Langmuir;3
dc.relation.ispartofpublicationvolume 27 en_US
dc.format.ePage 992
dc.format.sPage 981
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