Activation energy of controlled carboxymethyl cellulose size in dilute solution: conductivity measurements

Abstract

In this research, the conductivity (κ) of carboxymethyl cellulose (CMC) solutions of different concentrations and chains length was studied at various temperatures. κ was found to increase with increasing concentration, temperature, and decreasing the chain length of CMC. The activation energy (Eκ) of the different solutions was estimated according to the Andrade equation, Eκ was increased with increasing concentration and decreasing the chain length of CMC. The results indicated that solute – solute contact is decreased and the solute-solvent interaction is increased in CMC solutions with increasing temperature and decreasing chain dimensions of CMC.