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Authors
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Synytska, A. ; Stamm, M. ; Grundke, K.
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Title
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Irregular fractal assemblies from 'Core-shell' particles - a way to design ultrahydrophobic surfaces
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Date
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30.08.2006
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Number
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14000
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Abstract
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PMSE 113 - Nanotechnology Applications in Coatings <br /><br />Ultra/super hydrophobic (self-cleaning) surfaces have been attracted much interest because of potential practical applications in daily life, many industrial processes and fundamental research as well. The archetype of a superhydrophobic surface is that of the lotus leaf [1], on which a water droplet apparently forms a sphere, unstably sitting on the leaf, and dirt is easily removed with a rain shower. This behavior, known as the lotus or self-cleaning effect, is found to be a result of the hierarchical rough structure, as well as the wax layer present on the leaf surface. Here, we report about a novel and experimentally simple approach for designing of super hydrophobic repellent surfaces using core-shell' particle assemblies. This approach is based on the use of submicrometer size silica particles (100 nm in radius). The particles were modified either by a thin layer of chemically anchored polystyrene (PS) or by chemisorbed (tridecafluoro-1,1,2,2-tetrahydrooctyl) dimethylchlorosilane (FSI). It was shown that besides of fluorinated materials super-hydrophobic surfaces can be facilely obtained by moderately hydrophobic polymers (polystyrene in this work) with surface free energies in the order of about 30 mJ/m2.
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Publisher
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Polymeric Materials: Science and Engineering
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Wikidata
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Citation
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Polymeric Materials: Science and Engineering 51 (2006) 194-195
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DOI
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http://oasys2.confex.com/acs/232nm/techprogram/P967305.HTM
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Tags
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PG_Ultrahydrophobie
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PG_FunctionalParticles
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