REDISPERSIBLE CELLULOSE NANOCRISTAL (CNC), METHOD TO PRODUCE A DRY ISOLATED REDISPERSIBLE CELLULOSE NANOCRISTAL (CNC) AND POLYMER COMPOSITE

摘要

it is a chemically modified and redispersible cellulose nano crystal that comprises an ion adduct of a negative ion of sulfate and phosphate semiester, carboxylic acid or mixtures thereof and a positively charged protonated amine compound. modified cellulose nanocrystals are readily redispersible in various stable media and product emulsions. the cellulose nanocrystals are produced by adding to an aqueous suspension of acidic cellulose nanocrystals an amount of amine compound to increase the pH of the suspension to about a value below the pka of said amine, mixing and drying the resulting suspension to produce redispersible cnc.