From this study it was discovered that the morphology of a sol-gel based coating system could be tuned by the addition of particles. The morphology of the coating is dependent on the type of modification of the particles as the interfacial interaction of the particle with the coating formulation affects the orientation of the particles at the surface. Modification of our sepiolite brings about a change in hydrophobicity of the clay, as expected. The modification of the sepiolite with aliphatic or polysiloxane tails or a by combination of both affects the hydrophobicity and the interaction of the particles with the coating formulation. The sol-gel based coating systems can be tuned in roughness by the choice of the type of organo-sepiolite and its concentration in the coating formulation, resulting in nano-, submicron- or micro-roughness. The surface roughness as well as the surface energy of the final coating affects its performance in the marine environment as studied with three different organisms. The results need further investigation on model coatings to understand the different coating parameters that are crucial for real anti-fouling or fouling release performance. In comparison with conventional anti-fouling or fouling release coatings these coatings show an improved behaviour in comparison to the benchmarks tested.


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    Title :

    Novel biocidefree nanostructured antifouling coatings - Can nano do the job?


    Contributors:


    Publication date :

    2008


    Size :

    11 Seiten, 11 Bilder, 20 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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