Publication:
The effect of nanoparticles on the surface hydrophobicity of polystyrene

dc.contributor.departmentN/A
dc.contributor.departmentDepartment of Chemistry
dc.contributor.kuauthorYüce, Mehdi Yavuz
dc.contributor.kuauthorDemirel, Adem Levent
dc.contributor.kuprofilePhD Student
dc.contributor.kuprofileFaculty Member
dc.contributor.otherDepartment of Chemistry
dc.contributor.schoolcollegeinstituteGraduate School of Sciences and Engineering
dc.contributor.schoolcollegeinstituteCollege of Sciences
dc.contributor.yokidN/A
dc.contributor.yokid6568
dc.date.accessioned2024-11-10T00:09:18Z
dc.date.issued2008
dc.description.abstractThe surface hydrophobicity of polystyrene-nanoparticle nanocomposites has been investigated as a function of the nanoparticle content. The addition of hydrophobically coated nanoparticles in polystyrene increased the contact angle θ of a water drop with respect to that on polystyrene surface due to change of surface composition and/or surface roughness. When the nanoparticles dispersed well in the polymer, cos θ decreased linearly with increasing amount of nanoparticles indicating a composite surface consisting of smooth polystyrene regions and rough nanoparticle regions. In case of formation of nanoparticle aggregates in polystyrene, cos θ decreased sharply at a critical concentration of nanoparticles. The observed behaviour was modeled in terms of a transition from Wenzel regime to Cassie-Baxter regime at a critical roughness length scale below which the Laplace pressure prevented the penetration of the water drop into the surface undulations. We argue that multiple length scales are needed below the critical roughness length scale to increase the contact angle further by decreasing the fraction of surface area of solid material (increasing the fraction of surface area of air) underlying the water drop.
dc.description.indexedbyWoS
dc.description.indexedbyScopus
dc.description.issue45019
dc.description.openaccessNO
dc.description.publisherscopeInternational
dc.description.sponsorshipTurkish academy of Sciences We thank Degussa aG, Hanau, Germany for providing nanoparticles and Dr. Frank Menzel for discussions. a. L. D. acknowledges the financial support of Turkish academy of Sciences.
dc.description.volume64
dc.identifier.doi10.1140/epjb/e2008-00042-0
dc.identifier.eissn1434-6036
dc.identifier.issn1434-6028
dc.identifier.quartileQ4
dc.identifier.scopus2-s2.0-53149088219
dc.identifier.urihttp://dx.doi.org/10.1140/epjb/e2008-00042-0
dc.identifier.urihttps://hdl.handle.net/20.500.14288/17102
dc.identifier.wos259677600028
dc.keywordsTextured surfaces
dc.keywordsMicrodroplets
dc.keywordsStationary
dc.keywordsSingle
dc.keywordsRough
dc.languageEnglish
dc.publisherSpringer
dc.sourceEuropean Physical Journal B
dc.subjectPhysics
dc.subjectCondensed matter
dc.titleThe effect of nanoparticles on the surface hydrophobicity of polystyrene
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.authoridN/A
local.contributor.authorid0000-0002-1809-1575
local.contributor.kuauthorYüce, Mehdi Yavuz
local.contributor.kuauthorDemirel, Adem Levent
relation.isOrgUnitOfPublication035d8150-86c9-4107-af16-a6f0a4d538eb
relation.isOrgUnitOfPublication.latestForDiscovery035d8150-86c9-4107-af16-a6f0a4d538eb

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