Abstract
Sorption of water vapor by composite films consisting of hydroxypropyl cellulose and carboxymethyl cellulose with different degrees of ionization was studied. The composition ranges in which the polymers are compatible and the influence exerted by the degree of ionization of carboxymethyl cellulose on its compatibility with hydroxypropyl cellulose were determined. The character of the polymer–polymer–water (common solvent) interaction in ternary systems was analyzed, and the state of sorbed water in the polymer matrix was considered within the framework of theories of group contributions and clusterization.
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