Application of spray techniques for new photocatalytic gradient coatings on plastics

Transparent coating systems applicable on plastics surfaces by a spray technique are presented. The coatings are based on highly photocatalytically active nanoscaled titania powders, surface modified with silanes containing organic or fluoro-organic side chains. The modification allows for the intro...

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Bibliographic Details
Published in:Thin solid films 2006-04, Vol.502 (1), p.132-137
Main Authors: Schmidt, H., Naumann, M., Müller, T.S., Akarsu, M.
Format: Article
Language:English
Subjects:
Chemistry
Cross-disciplinary physics: materials science
rheology
Electrochemistry
Electrodes: preparations and properties
Exact sciences and technology
General and physical chemistry
Gradient coatings
Materials science
Methods of deposition of films and coatings
film growth and epitaxy
Nanoparticles
Photocatalysis
Physics
Polymers
Spray coating techniques
Titanium dioxide
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Summary:Transparent coating systems applicable on plastics surfaces by a spray technique are presented. The coatings are based on highly photocatalytically active nanoscaled titania powders, surface modified with silanes containing organic or fluoro-organic side chains. The modification allows for the introduction of the particles in organic inorganic hybrid NANOMER® coating systems. In the wet film–due to the evaporation of the solvents–a decompatibilisation of the coated particles to the matrix results in a self-organising gradient layer formation with an up-concentration of the active particles at the interface layer between coating and air. After activation by irradiation with artificial or natural UV-light, highly active transparent photocatalytic coatings for a great variety of materials are obtained.
ISSN:0040-6090
1879-2731
DOI:10.1016/j.tsf.2005.07.257