The incorporation of nanosized metal particles into cyclodextrin-containing material
leads to a "reactive" barrier material having excellent barrier properties. Also,
it has been found that the presence of nanosized metal or metal alloy particles
in a barrier material such as thermoplastic material, wherein said material comprises
cyclodextrin derivatives, may be advantageous in achieving excellent barrier properties.
The barrier material of the present invention may provide improved barrier resistance
to a variety of permeants and/or impurities. The diffusion of volatile substances
through the barrier material may be prevented by adding compatible derivatized
cyclodextrin and nanosized metal particles to the material used. Accordingly, the
inventive material also is suitable for many applications including food-contact
packaging, flexible packaging to dispose of adult and baby diapers, incontinent
products, hospital and household waste and also for packaging pharmaceutical products,
medical devices and dental materials.
