Please use this identifier to cite or link to this item:
doi:10.22028/D291-24704
Title: | Antimicrobic low surface-free energy nanocomposite coatings |
Author(s): | Becker-Willinger, Carsten Csögör, Zsuzsa Gerwann, Jochen Schmidt, Helmut K. |
Language: | English |
Year of Publication: | 2002 |
OPUS Source: | Hygienic coatings : Brussels, Belgium, 8 - 9 July 2002 ; conference papers / [The First Global Conference Dedicated to Hygienic Coatings. The International Centre for Coatings Technology, Paint Research Association]. - Teddington, Middlesex : Paint Research Association, 2002, Paper 7 |
SWD key words: | Nanopartikel Silberion Organisch-anorganischer Hybridwerkstoff Sol-Gel-Verfahren |
DDC notations: | 620 Engineering and machine engineering |
Publikation type: | Conference Paper |
Abstract: | A new type of silver nanoparticles containing coating based on inorganic-organic hybrid materials has been developed by the sol-gel technique to achieve antimicrobic properties. The formation of an inactive biofilm layer, which can block the antimicrobic effect, was reduced by decreasing the surface-free energy of the coating. Ag+ ions as effective oligodynamic components are generated by Ag nanoparticles with a size between 5-10nm. The Ag nanoparticles are produced during the drying and curing process. The investigation of the long-time release behavior of Ag+ ions show that the coating has oligodynamic properties for at least several month. The antimicrobic effect of the coating has been proved by inoculation with Gram negative bacterium E.coli. A low surface-free energy of about 19,5mN/m could be achieved by using side chain perfluorinated organo alkoxy silanes, which upconcentrate at the coating surface by thermodynamical reasons. Compared with uncoated samples the low surface-free energy of the coating lead to a reduction of biofilm adhesion of about 95%. |
Link to this record: | urn:nbn:de:bsz:291-scidok-30281 hdl:20.500.11880/24760 http://dx.doi.org/10.22028/D291-24704 |
ISBN: | 0-9543164-0-1 |
Date of registration: | 11-Nov-2010 |
Faculty: | SE - Sonstige Einrichtungen |
Department: | SE - INM Leibniz-Institut für Neue Materialien |
Collections: | INM SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
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