Thermal gelation properties of carboxymethyl cellulose and bentonite-carboxymethyl cellulose dispersions: Rheological considerations

摘要

The aim of this work was to study the thermal behavior of carboxymethyl cellulose (CMC) aqueous solutions and bentonite-CMC mixtures, from room temperature to higher temperatures, above gelation, using a rheological analysis. The rheological properties of aqueous CMC solutions and bentonite-CMC dispersions at different mass concentrations of CMC (0.1, 0.5, 1.0 and 2.0 wt%) were investigated at different temperatures (20, 40, 60, and 80 degrees C) using large deformation rheological measurements.