Morphologies and Superhydrophobicity of Hybrid Film Surfaces Based on Silica and Fluoropolymer-中国期刊网

摘要 Fluoropolymeranddifferentkindsofsilicaparticleswereusedforcontrollingsurfacechemistryandmorphology,respectively.Asuperhydrophobicsurfaceoriginatedfromstrawberry-likeorquincunx-shapedcompositesilicaparticleswasobtained.Thedualsizeparticlesareobtainedbyutilizingthegraftofdifferentmodifiedsilicaparticleswithepoxyfunctionalgroupandaminefunctionalgroup.Thismakesthesurfaceoffilmformacompositeinterfacetohaveirregularbinarystructurewhichplaysanessentialroleintrappingairbetweenthesubstratesurfaceandtheliquiddropletstobenecessaryforhighcontactangleandlowcontactanglehysteresis.Themaximumcontactangleforwateronthehybridfilmisabout174±2°andthecontactanglehysteresisislessthan2°.Thesurfacemorphologies,roughnessandthewettabilityonthesurfaceoffilmscontainingdifferentstructuralsilicaparticleswerecompared.Itwasshownthatthehierarchicalirregularlystructurewithalowroughnessfactorandhighair-trappedratioisindispensableforsuperhydrophobicsurface.Althoughthisstructuralsurfacesbasedoncompositesilicaparticlesplayavitalroleingoverningthesurfacewettability,itisnecessarytocombinewithalowsurfaceenergytomakethesurfacesuperhydrophobic.

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Morphologies and Superhydrophobicity of Hybrid Film Surfaces Based on Silica and Fluoropolymer

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Morphologies and Superhydrophobicity of Hybrid Film Surfaces Based on Silica and Fluoropolymer

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