STABILITY OF ELEMENTAL SULFUR DISPERSION IN THE PRESENCE OF LIGNIN SULFO DERIVATIVES
Abstract
The results of the effect of lignosulfonates of various molecular weight distribution on the aggregate stability of sulfur dispersions are represented. The suspensions were found to have the most aggregate stability in neutral and weakly acidic media (pH ≥ 4,5) in the presence of high-molecular samples (Μw 46300 a. u.) and in acidic media (pH = 1) – in the presence of low-molecular sample (Μw 9250 a. u.). With increasing temperature from 293 to 313 K, the coagulation of sulfur dispersions accelerated by 3–4 times, and the suspensions lifetime reduced by 2 times.
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