Rheological and Conductometric Properties of Carboxymethylcellulose/Dodecylpyridinium Complexes

Polymers, polyelectrolytes, and surfactants are chemical compounds with distinct properties and play essential roles in numerous industrial, pharmaceutical, and biological applications. Mixtures of carboxymethylcellulose (CMC−) and dodecylpyridinium chloride (DP+) are widely used in various formulations, and understanding their interactions is important for controlling the physical properties and stability of these systems. In this study, CMC−/DP+ mixtures were prepared according to the volumetric fraction of DP+, denoted XDP+ (0–1). Aqueous solutions of CMC−/DP+ complexes at a constant concentration of 10 g/L were investigated over a temperature range of 15 °C to 45 °C using rheological and conductometric analyses. The dynamic viscosity (η), electrical conductivity (σ), activation energy of viscous flow (ΔGη), and activation energy of electrical conductivity (ΔGσ) of the CMC−/DP+ complexes were determined and analyzed as functions of composition and temperature.