MODIFIED CELLULOSE FINE FIBERS AND METHOD FOR PRODUCING SAME

摘要: Modified fine cellulose fibers are produced by impregnating a with reactive fibrillation solution or mixture containing catalyst including base an organic acid catalyst, monobasic carboxylic anhydride, and aprotic solvent having donor number of not less than 26 to esterify chemically fibrillate the cellulose. This method provides simple efficient process for producing modified that have diameter from several nano-meters submicrometers, large aspect ratio, high degree crystallinity, damage in shape crystalline structure fibers, excellent dispersibility solvent; The may contain pyridine compound. anhydride be C 2-4 aliphatic monocarboxylic anhydride. resulting crystallinity 70%, average fiber 20 800 nm, length 1 200 µm.