Stoichiometry of solvation in solutions of cellulose esters

Parameters controlling the thermodynamic compatibility of cellulose esters with solvents and plasticizing agents were examined. It was shown that when the solvate bonds are formed, the stoichiometry of solvation, that is, the number of solvent molecules contacting with glucopyranose ring of cellulos e ester is the main factor affecting the thermodynamic compatibility. For s everal solutions of cellulose eaters, the stoichiometry of solvation was es timated. An equation relating the stoichiometry of solvation to the limit o f compatibility was suggested.