Solvent-free process to esterify polysaccharides.
A novel process for the preparation of acetates of polysaccharides is described herein. The process involves the acetylation of polysaccharides with acetic anhydride in the presence of iodine as a catalyst. No solvent is required to bring about the acetylation. The method is simple, rapid, and characterized by a high conversion ratio. Conversion of cellulose and starch into their corresponding acetate derivatives has been demonstrated.
Biswas
Atanu
A
Plant Polymer Research Unit, National Center for Agricultural Utilization Research, USDA/Agricultural Research Service, 1815 N. University Street, Peoria, Illinois 61604, USA. biswasa@ncaur.usda.gov
Shogren
R L
RL
Willett
J L
JL
D019342:Acetic Acid / Q000737:chemistry; D000107:Acetylation; D002482:Cellulose / Q000737:chemistry; D004951:Esterification; D007455:Iodine / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D011134:Polysaccharides / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry*
D011134:Polysaccharides; D012997:Solvents; D002482:Cellulose; D007455:Iodine; D019342:Acetic Acid