Plasticizer-free flexible oxygen barrier films and laminates based on negatively charged and acetylated non-cellulosic polysaccharides isolated from biomass

摘要: Food, consumer, and industrial product packaging materials are provided by embodiments of the present invention. Films laminates based on a combination negatively charged polysaccharides as such materials. The films can be prepared mildly treating soft wood with steam followed alkali extraction enzymatic treatment. Negatively non-cellulosic isolated weight average molecular Mw higher than 10,000 g/mol structure comprising xylan main chain substituted more 15 molar % glucuronic acid 5 arabinose. casted from water solution suitable carrier surface acetylated or coated polysaccharide to obtain oxygen barrier laminate. Inventive have strength at break above 55 MPa, elongation 2.5%, cohesive adhesive properties good moisture properties.