Advanced Functional Materials from Nanopolysaccharides
Résumé
Polysaccharide is a type of carbohydrate molecules composed of long polymeric chains with monosaccharide units as building blocks covalently bound together by glycosidic linkages. The typical polysaccharides in nature are cellulose, chitin, and starch, which commonly exist in the plants, animals, microorganisms, and bacteria. Derived from the strong intra-and inter-molecular hydrogen bonds, the crystalline and amorphous regions by the ordered arrangement and assembly of the linear and highly branched polymeric chains constitute the microstructures of these polysaccharides. Nanopolysaccharides can be produced by the partial or complete removal of amorphous regions, which is a kind of novel materials with the preservation of crystalline region and possesses the nanometer scale (< 100 nm) at least one dimension. The typical nanopolysaccharides include the highly crystalline cellulose nanocrystal, chitin …