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Surface and bulk mechanisms in repeating treatment of solid surfaces by purified water
Malmö universitet, Fakulteten för hälsa och samhälle (HS), Institutionen för biomedicinsk vetenskap (BMV). Malmö universitet, Biofilms Research Center for Biointerfaces. Malmö Univ, Dept Biomed Sci, Malmö, Sweden.;Malmö Univ, Biofilms Res Ctr Biointerfaces, Malmö, Sweden..
Malmö universitet, Fakulteten för hälsa och samhälle (HS), Institutionen för biomedicinsk vetenskap (BMV). Malmö universitet, Biofilms Research Center for Biointerfaces.ORCID-id: 0000-0002-9852-5440
2023 (Engelska)Ingår i: Heliyon, E-ISSN 2405-8440, Vol. 9, nr 6, artikel-id e17163Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

To decrease the negative impact of surfactants, the idea of using purified water in washing has been proposed. Previous studies showed that purified water facilitates the roll-up mechanism by promoting electrostatic interactions between the surface and the soil. However, washing mech-anisms can be dependent on the amount of remaining soil.In this work we studied the removal of thin Vaseline films and thicker oil films from hydro-philic surfaces using multiple washing cycles at different temperatures. The Quartz Crystal Mi-crobalance with Dissipation monitoring (QCM-D) and gravimetric analysis were used for thin and thick films respectively. In QCM-D experiments most of the thin film was removed during the first two cycles, while following cycles did not substantially affect washing efficiency; increased temperature facilitated the washing process. Gravimetric analysis showed that the washing of thicker films can be divided into two regimes. During the first, exponential, regime the amount of oil on the surface is high and surface mechanisms, such as roll-up, dominate. Oil droplets are kinetically stabilized in purified water by electrostatic interactions. As the amount of oil on the surface decreases, the second, linear, regime is introduced. The removal of oil occurs by equi-librium bulk mechanisms, where electrostatic interactions are less important.

Ort, förlag, år, upplaga, sidor
Cell Press, 2023. Vol. 9, nr 6, artikel-id e17163
Nyckelord [en]
Washing and cleaning, Water purity, Quartz crystal microbalance with dissipation, monitoring, Temperature, Washing cycles, Mechanisms of washing and cleaning, Emulsification, Olive oil, Surface tension, Entropy, Charge stabilization
Nationell ämneskategori
Teknisk mekanik
Identifikatorer
URN: urn:nbn:se:mau:diva-62433DOI: 10.1016/j.heliyon.2023.e17163ISI: 001042270500001PubMedID: 37484311Scopus ID: 2-s2.0-85162160293OAI: oai:DiVA.org:mau-62433DiVA, id: diva2:1796634
Tillgänglig från: 2023-09-13 Skapad: 2023-09-13 Senast uppdaterad: 2023-09-13Bibliografiskt granskad

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Tsompou, AndrianiKocherbitov, Vitaly

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Tsompou, AndrianiKocherbitov, Vitaly
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Institutionen för biomedicinsk vetenskap (BMV)Biofilms Research Center for Biointerfaces
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Totalt: 54 träffar
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