CELLULOSIC FIBER- AND CHITOSAN-BASED COMPOSITE MATERIAL AND A METHOD FOR THE PREPARATION THEREOF

摘要

- 13 -ABSTRACT OF THE DISCLOSURECELLULOSIC FIBER- AND CHITOSAN-BASED COMPOSITEMATERIAL AND A METHOD FOR THE PREPARTION THREREOFThe composite material of the invention is a sheet ofcellulose fibers impregnated with chitosan of at least 40%deacetylation and further impregnated with a higher fattyacid such as stearic acid by treating with an organic solu-tion thereof. Different from conventional paper and filmsof plastic resins, the composite sheet of the invention hasa high strength even in a wet condition and still is biode-gradable, for example, in wet soils to cause no problems ofenvironmental pollution by the waste thereof left in envi-ronments. Therefore, the composite sheet of the inventionis useful as a wrapping material of foods, sheet materialsfor agricultural uses and other temporary or seasonal uses.