Applicability of Cassie-Baxter equation for superhydrophobic fluoropolymer silica composite films

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dc.authoridCengiz, Ugur/0000-0002-0400-3351
dc.authoridOZEN CANSOY, ELIF/0000-0003-2275-042X
dc.contributor.authorCengiz, Ugur
dc.contributor.authorCansoy, C. Elif
dc.date.accessioned2025-01-27T20:22:43Z
dc.date.available2025-01-27T20:22:43Z
dc.date.issued2015
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractIn this study, surface topographies and wettabilities of flat and composite rough films of perfluoro-styrene (TM/S) random copolymers with silica particles were investigated. The water and oil repellencies of flat TM/S copolymer and rough silica-TM/S composite surfaces were studied with varying perfluoro and silica contents. Increase in silica content resulted in an increase in water contact angle values; water contact angle values increased from 113 up to 170, and the resultant surfaces were showing extremely superhydrophobic behavior depending on their silica contents. However a decrease in hexadecane contact angles from 61 to 25 depending on both silica %wt and perfluoro content of the TM/S copolymer was seen. Applicability of Cassie-Baxter equation was also investigated for TM/S copolymer films with silica particles. The results showed that Cassie-Baxter equation cannot be used for superhydrophobic surfaces, however, can be applied to oleophilic surfaces with caution. The oil repellencies of TM/S flat films in the terms of contact angle hysteresis was also compared with perfluoroethyl alkyl methacrylate-methyl methacrylate copolymer (TM/MMA) by using oil drops with varying surface tensions between 20.9 mN/m and 26.9 mN/m. The surface oleophobicities were changed according to the characteristics of the functional groups of MMA and S. The dependency of work of adhesion results of TM/S flat surfaces on wt.% of perfluoroalkyl content was also examined. (C) 2015 Elsevier B.V. All rights reserved.
dc.identifier.doi10.1016/j.apsusc.2015.02.033
dc.identifier.endpage106
dc.identifier.issn0169-4332
dc.identifier.issn1873-5584
dc.identifier.scopus2-s2.0-84930476550
dc.identifier.scopusqualityQ1
dc.identifier.startpage99
dc.identifier.urihttps://doi.org/10.1016/j.apsusc.2015.02.033
dc.identifier.urihttps://hdl.handle.net/20.500.12428/22007
dc.identifier.volume335
dc.identifier.wosWOS:000351614000015
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofApplied Surface Science
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectSuperhydrophobicity
dc.subjectOleophobicity
dc.subjectCassie-Baxter equation
dc.subjectContact angle hysteresis
dc.subjectWork of adhesion
dc.titleApplicability of Cassie-Baxter equation for superhydrophobic fluoropolymer silica composite films
dc.typeArticle

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