Solvent effect on carboxymethylation of cellulose

Abstract

Solvent Effect on Carboxymethylation of CelluloseThe mixture of water and isopropyl alcohol is the ideal solvent for the preparation of carboxymethyl cellulose (CMC) .lThe effect of the proportion of isopropyl alcohol to water in the solvent on the degree of substitution and viscosity of the CMC product has been reported.'However, no reports that studied the mechanism of such a n effect have been found.This work used the X-diffraction method to determine various crystalline structures of cellulose caused by different compositions of the solvent.The relationship between the composition of the solvent and the degree of substitution, viscosity, and molecular weight of CMC is correlated quantitatively by us.