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INM Exhibited Anti-microbial Coatings with Silver & Copper Colloids at Eurofinish’13 & Materialica'13

Published on 2013-10-28. Author : SpecialChem

The INM - Leibniz Institute for New Materials presented their products at the Eurofinish and Materialica international trade fairs.

Hygienic conditions and sterile procedures are particularly important in hospitals, kitchens and sanitary facilities, air conditioning and ventilation systems, in food preparation and in the manufacture of packaging material. In these areas, bacteria and fungi compromise the health of both consumers and patients. Researchers at the INM have produced antimicrobial coatings with both silver and copper colloids with a long-term effect that kill germs reliably and at the same time prevent germs becoming established.

The INM presented this development at the Eurofinish 2013 international trade fair in Ghent, Belgium.

"The new development combines two properties which means the presence of germs and fungi on these surfaces is zero", explains Carsten Becker-Willinger, Head of the Nanomers Program Division. Silver or copper colloids which gradually release germicidal metal ions into the environment are incorporated in the coating. "The metal colloids are only a few nanometers in size, but their particular ratio of size to surface area produces a distinctive long-term effect. The "consumption" of metals to metal ions is then so low that the coating can be effective for several years", said the chemist.

At the same time, the surface of the coating is anti-adhesive, so neither dead nor fresh germs can adhere to the surface. As a result, the coating primarily counteracts the formation of an extensive biofilm.

The researchers were able to prove the double microbicidal and biofilm-inhibiting action using the standardized ASTM E2 180 test process. The new material can be applied to a variety of substrates such as plastic, ceramic or metal using conventional techniques such as spraying or dipping, and cures thermally or photochemically. Selective variation of the individual components allows the developers to react to the particular and different needs of potential users.

As part of the EU-sponsored CuVito project, the developers are now looking at increasingly using copper colloids and copper ions as well as silver which they hope will open up other fields of application.

The INM exhibited these and other developments at Materialica 2013 in Munich and at Eurofinish 2013 in Ghent (Belgium).

About INM

INM is focused on the research and development of materials - for today, tomorrow and the future. Chemists, physicists, biologists, materials and engineering scientists shape the work at INM. INM - Leibniz Institute for New Materials, situated in Saarbrücken/Germany, is one of the leading centers for materials research. It is a scientific partner to national and international institutes and a provider of research and development for companies throughout the world. INM is an institute of the Scientific Association Gottfried Wilhelm Leibniz and employs around 180 collaborators. Its main research fields are Chemical Nanotechnology, Interface Materials, and Materials in Biology.

Source: INM


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