PREPARATION METHOD OF ACETYLATED CELLULOSE ETHER, AND ACETYLATED CELLULOSE ETHER PREPARED THEREBY

摘要

Disclosed is a preparation method of an acetylated cellulose ether, and an acetylated cellulose ether prepared thereby. The preparation method of an acetylated cellulose ether comprises the following steps: dissolving an acetylated cellulose ether in an organic solvent to obtain a mixture containing an acetylated cellulose ether solution; removing an insoluble component which does not dissolve in the organic solvent, from the mixture; and injecting the mixture into water to precipitate an acetylated cellulose ether. An acetylated cellulose ether prepared by the method has a turbidity of less than 40 FTU.