Bakterien tummeln sich gern auf Bauteilen aus Kunststoff wie z. B. Lichtschaltern, in Wasserrohren oder auch auf medizinischen Geräten. Abhilfe schaffen keimtötende Werkstoffe etwa Kupfer, die in die Kunststoffe eingearbeitet werden, oder spezielle antibakterielle Beschichtungen. Das Fraunhofer UMSICHT hat neue Wege entwickelt, das Wachstum von Bakterien auf Oberflächen zu reduzieren: Hierzu werden entweder antimikrobielle Wirkstoffe in oberflächennahe Schichten von Polymeren imprägniert, oder die Entstehung eines Biofilms wird durch die Unterbindung der Kommunikation zwischen den Bakterien verhindert. Die Verfahren werden kontinuierlich weiterentwickelt und in der Anwendung getestet – für den Consumerbereich, die Medizintechnik, für technische Applikationen und die Lebensmittelbranche.
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