Effects of plasma treatment on drag reduction and wettability properties of Sylgard®184

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dc.contributor.authorLima, Luiz Henrique Pinheiro de
dc.contributor.authorMedeiros Neto, João Freire
dc.contributor.authorLima, Jackson Silva
dc.contributor.authorRangel, Jonathan Ferreira
dc.contributor.authorLima, Luciano Lucas Fernandes
dc.contributor.authorQueiroz, José César Augusto de
dc.contributor.authorFeitor, Michelle Cequeira
dc.contributor.authorBessa, Kleiber Lima de
dc.contributor.authorCosta, Thércio Henrique de Carvalho
dc.contributor.authorIDhttps://orcid.org/0000-0001-7429-4273
dc.contributor.authorIDhttps://orcid.org/0000-0001-9560-2538
dc.contributor.authorIDhttps://orcid.org/0000-0003-4671-6170
dc.contributor.authorIDhttps://orcid.org/0000-0003-3149-6830
dc.contributor.authorIDhttps://orcid.org/0000-0002-4850-9493
dc.contributor.authorIDhttps://orcid.org/0000-0002-4133-0298
dc.date.accessioned2025-11-05T22:29:20Z
dc.date.available2025-11-05T22:29:20Z
dc.date.issued2025-01
dc.description.resumoThis study investigates the surface modification of Sylgard®184 polydimethylsiloxane (PDMS) samples through plasma treatments using two configurations: a mixed gas composition (acetylene, argon, and chloroform) and pure argon. The primary objective was to evaluate how these treatments affect the physicochemical properties of the surfaces and their drag-reduction capabilities. Analyses conducted using scanning electron microscopy (SEM), atomic force microscopy (AFM), and Fourier-transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR) revealed diverse morphologies and chemical compositions resulting from different treatment parameters. Key findings indicate that an optimal combination of surface roughness and hydrophobic functional groups, notably Si–CH3, and C = C bonds, is crucial for achieving superhydrophobic surfaces and effective drag reduction. Samples treated with the mixed gas configuration exhibited enhanced drag reduction capabilities, particularly those treated at 0.08 A for 60 min, which showed balanced roughness and film uniformity. Conversely, argon-treated samples displayed variable performance depending on treatment conditions, with the 0.08 A for 60 min of treatment demonstrating consistent drag reduction, especially at higher Reynolds numbers. The correlation between viscous sublayer thickness and surface roughness underscored the significance of surface morphology in fluid–surface interactions. While high roughness increased flow resistance under turbulent conditions, moderate roughness maintained drag reduction efficiency. These findings highlight the practical importance of optimizing plasma treatment parameters to develop effective superhydrophobic surfaces for various applications, contributing to advancements in industries where drag reduction is critical
dc.identifier.citationLIMA, Luiz Henrique Pereira de; MEDEIROS NETO, João Francisco; LIMA, Jackson Silva; RANGEL, Jonathan Ferreira; LIMA, Luciano Lucas Fernandes; QUEIROZ, José César Augusto de; FEITOR, Michelle Cequeira; BESSA, Kleiber Lima de; COSTA, Thercio Henrique de Carvalho. Effects of plasma treatment on drag reduction and wettability properties of Sylgard®184. Applied Physics A-Materials science & Processing, v. 131, p. 132, 24 jan. 2025. DOI: https://doi.org/10.1007/s00339-025-08259-7. Disponível em: https://link.springer.com/article/10.1007/s00339-025-08259-7. Acesso em: 15 out. 2025.
dc.identifier.doihttps://doi.org/10.1007/s00339-025-08259-7
dc.identifier.urihttps://repositorio.ufrn.br/handle/123456789/66039
dc.language.isoen
dc.publisherApplied Physics A-Materials science & Processing
dc.subjectSuperhydrophobic surfaces
dc.subjectPlasma treatment
dc.subjectHydrodynamic drag reduction
dc.subjectPDMS (polydimethylsiloxane)
dc.subjectSurface characterization
dc.titleEffects of plasma treatment on drag reduction and wettability properties of Sylgard®184
dc.typearticle

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