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dc.contributor.authorHokkanen, Matti
dc.contributor.authorLautala, S.
dc.contributor.authorFlahaut, E.
dc.contributor.authorAhlskog, Markus
dc.date.accessioned2017-10-04T10:52:29Z
dc.date.available2019-12-01T22:35:32Z
dc.date.issued2017
dc.identifier.citationHokkanen, M., Lautala, S., Flahaut, E., & Ahlskog, M. (2017). Experimental studies on the detachment of multi-walled carbon nanotubes by a mobile liquid interface. <i>Colloids and Surfaces A: Physicochemical and Engineering Aspects</i>, <i>533</i>, 109-115. <a href="https://doi.org/10.1016/j.colsurfa.2017.08.029" target="_blank">https://doi.org/10.1016/j.colsurfa.2017.08.029</a>
dc.identifier.otherCONVID_27182645
dc.identifier.otherTUTKAID_74789
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/55556
dc.description.abstractRetention and detachment of colloidal particles from surfaces is often considered only in terms of spontaneous chemical dispersion when the surface is already fully submerged. Nevertheless, interfacial processes, where the particles are caught on a mobile liquid contact line by capillary effects are ubiquitous. Theoretical description of such interfacial processes exist for spherical microcolloids, while for anisotropic shapes the literature is limited. Arc-discharge synthesized multiwalled carbon nanotube (MWNT) material contains besides the very anisotropic tubes also irregular amorphous carbon particles (ACP) that both are strongly hydrophobic. As a water–air–solid contact line is swept over a deposition of MWNT material on a hydrophilic substrate, it causes selective detachment of the spherical ACPs over the one dimensional MWNTs. In this work we investigate the detachment process and the balance between the surface tension force and adhesive forces. Our results show that on hydrophilic substrates the surface tension force of the liquid interface dominates over adhesion, sweeping away most of the material. However, clean MWNTs oriented perpendicular to the contact line are able to resist detachment. On the other hand, on hydrophobic surfaces adhesive forces dominate, possibly via the hydrophobic interaction. We discuss these results with conventional models of capillarity and adhesion, including the van der Waals force and the electrostatic double layer interaction. However, a fully satisfactory analysis will require e.g. computational modelling of the problem.
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofseriesColloids and Surfaces A: Physicochemical and Engineering Aspects
dc.subject.othercarbon nanotube
dc.subject.othercontact line
dc.subject.otherwetting
dc.subject.otherhydrophobic interaction
dc.titleExperimental studies on the detachment of multi-walled carbon nanotubes by a mobile liquid interface
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201709263831
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.contributor.oppiaineNanoscience Centerfi
dc.contributor.oppiaineNanoscience Centeren
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2017-09-26T15:15:04Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.format.pagerange109-115
dc.relation.issn0927-7757
dc.relation.numberinseries0
dc.relation.volume533
dc.type.versionacceptedVersion
dc.rights.copyright© 2017 Elsevier B.V. This is a final draft version of an article whose final and definitive form has been published by Elsevier. Published in this repository with the kind permission of the publisher.
dc.rights.accesslevelopenAccessfi
dc.subject.ysonanoputket
dc.subject.ysopintakemia
dc.subject.ysopintajännitys
jyx.subject.urihttp://www.yso.fi/onto/yso/p25661
jyx.subject.urihttp://www.yso.fi/onto/yso/p15067
jyx.subject.urihttp://www.yso.fi/onto/yso/p3147
dc.relation.doi10.1016/j.colsurfa.2017.08.029


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