| 摘要 |
It has now been found that the incorporation of nanosized metal particles into cyclodextrin-containing material leads to a "reactive" barrier material having excellent barrier properties. More specifically, it has been found that the presence of nanosized metal or metal alloy particles in a barrier material, preferably a thermoplastic material, wherein said material comprises cyclodextrin derivatives, is advantageous in achieving excellent barrier properties. The barrier material of the present invention provides improved barrier resistance to a variety of permeants and/or impurities. The diffusion of volatile substances through the barrier material is 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. |
