Anti-microbial material with reduced oxygen permeability

摘要

The present invention is related to a material having at least one surface on which chitosan has been immobilised so as to be substantially resistant to leaching and having a strong anti-microbial activity as well as reduced oxygen permeability. The material may be a metal or a polymer such as a biaxially orientated polypropylene film. According to the process of the invention, chitosan is immobilised on a surface by applying a solution containing chitosan and a cross-linker to a material which has been functionalized in an atmospheric pressure dielectric barrier discharge by plasma activation or thin film deposition.