[Degradation of sodium carboxymethylcellulose in different media].

Aqueous solutions of CMCNa change the rheological properties in the presence of electrolytes. It was stated that the greater the ionic strength, the weaker the dynamic viscosity. The tixotropy of CMCNa solutions decreases with time and those changes are proportional to the ionic strength of the electrolyte. No significant changes of the IR spectra of CMCNa were observed, which means that changes of the rheological properties do not influence the chemical structure of CMCNa.