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Bubble Attachment to Cellulose and Silica Surfaces of Varied Surface Energies : Wetting Transition and Implications in Foam Forming

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Ketola, Annika E.
dc.contributor.author Xiang, Wenchao
dc.contributor.author Hjelt, Tuomo
dc.contributor.author Pajari, Heikki
dc.contributor.author Tammelin, Tekla
dc.contributor.author Rojas, Orlando J.
dc.contributor.author Ketoja, Jukka A.
dc.date.accessioned 2020-08-06T12:13:42Z
dc.date.available 2020-08-06T12:13:42Z
dc.date.issued 2020-07-07
dc.identifier.citation Ketola , A E , Xiang , W , Hjelt , T , Pajari , H , Tammelin , T , Rojas , O J & Ketoja , J A 2020 , ' Bubble Attachment to Cellulose and Silica Surfaces of Varied Surface Energies : Wetting Transition and Implications in Foam Forming ' , Langmuir , vol. 36 , no. 26 , pp. 7296-7308 . https://doi.org/10.1021/acs.langmuir.0c00682 en
dc.identifier.issn 0743-7463
dc.identifier.issn 1520-5827
dc.identifier.other PURE UUID: 5329336d-0ea1-43bc-b2e3-d32cb6536308
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/5329336d-0ea1-43bc-b2e3-d32cb6536308
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85088207692&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/53727004/acs.langmuir.0c00682.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/45516
dc.description * Ack:ssa mutta ei silti mukaan raportointiin | openaire: EC/H2020/788489/EU//BioElCell
dc.description.abstract To better understand the complex system of wet foams in the presence of cellulosic fibers, we investigate bubble-surface interactions by following the effects of surface hydrophobicity and surface tension on the contact angle of captive bubbles. Bubbles are brought into contact with model silica and cellulose surfaces immersed in solutions of a foaming surfactant (sodium dodecyl sulfate) of different concentrations. It is observed that bubble attachment is controlled by surface wetting, but a significant scatter in the behavior occurs near the transition from partial to complete wetting. For chemically homogeneous silica surfaces, this transition during bubble attachment is described by the balance between the energy changes of the immersed surface and the frictional surface tension of the moving three-phase contact line. The situation is more complex with chemically heterogeneous, hydrophobic trimethylsilyl cellulose (TMSC). TMSC regeneration, which yields hydrophilic cellulose, causes a dramatic drop in thebubble contact angle. Moreover, a high interfacial tension is required to overcome the friction caused by microscopic (hydrophilic) pinning sites of the three-phase contact line during bubble attachment. A simple theoretical framework is introduced to explain our experimental observations. en
dc.format.extent 13
dc.format.extent 7296-7308
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation info:eu-repo/grantAgreement/EC/H2020/788489/EU//BioElCell
dc.relation.ispartofseries Langmuir en
dc.relation.ispartofseries Volume 36, issue 26 en
dc.rights openAccess en
dc.title Bubble Attachment to Cellulose and Silica Surfaces of Varied Surface Energies : Wetting Transition and Implications in Foam Forming en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department VTT Technical Research Centre of Finland
dc.contributor.department Department of Bioproducts and Biosystems
dc.identifier.urn URN:NBN:fi:aalto-202008064475
dc.identifier.doi 10.1021/acs.langmuir.0c00682

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