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The present work describes an investigation concerning the acetylation of celluloses extracted from short-life-cycle plant sources ( i.e.  sugarcane bagasse and sisal fiber) as well as microcrystalline cellulose. The acetylation was carried out under homogeneous conditions using the solvent system  N,N dimethylacetamide/ lithium chloride. The celluloses were characterized, and the characterizations included an evaluation of the amount of hemicellulose present in the materials obtained from lignocellulosics sources (sugarcane and sisal). The amount of LiCl was varied and its influence on the degree of acetate substitution was analyzed. It was found that the solvent system composition and the nature of the cellulose influenced both the state of chain dissolution and the product characteristics. The obtained results demonstrated the importance of developing specific studies on the dissolution process as well as on the derivatization of celluloses from various sources.

e-polymers

Sisal, Sugarcane Bagasse and Microcrystalline Celluloses: Influence of the Composition of the Solvent System N,NDimethylacetamide /Lithium Chloride on the Solubility and Acetylation of these Polysaccharides