Physicochemical Properties of Solutions of Carboxymethylated Pine Wood

Objective: The study investigates the physicochemical properties of solutions of carboxymethylated pine wood (CMD preparation) to assess its potential as an adjuvant in pesticide treatments for plants. Methods: The physicochemical properties of CMD solutions were analyzed, including pH, electrical conductivity, relative viscosity, and surface tension. The effect of mechanical action on intermolecular interactions and the strength of structural formations in the CMD solutions was evaluated using rotational viscometry in the shear rate range of 10–1000 s–1 and at temperatures from 20 to 50°C. Results and Discussion: The CMD solutions were found to have an alkaline pH, low viscosity, and weaker intermolecular interactions compared to carboxymethyl cellulose (CMC) solutions. Stable rheological behavior was observed at a concentration of 0.1% in the temperature range of 20–40°C. CMD exhibited surface-active properties similar to the commercial preparation Neon 99, suggesting its potential use as an adjuvant in pesticide treatments. Conclusions: The CMD preparation demonstrated suitable physicochemical properties for use as an adjuvant in pesticide treatments, with surface-active properties comparable to those of commercial products.