contacting dissolving grade cellulose with {TAIL ~ an acetylating catalyst} and {HEAD ~ acetylating solvent} to produce a mixture, wherein the catalyst is uniformly distributed throughout the mixture, wherein the amount of acetylating catalyst is from 0.5 to 5 weight parts per 100 weight parts cellulose, to produce a cellulose activate; and 
contacting dissolving grade cellulose with { TAIL ~ an acetylating catalyst } and { HEAD ~ acetylating solvent } to produce a mixture , wherein the catalyst is uniformly distributed throughout the mixture , wherein the amount of acetylating catalyst is from 0.5 to 5 weight parts per 100 weight parts cellulose , to produce a cellulose activate ; and
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH