Abstract
The effect of pH on the zeta potential of dispersions of individual n-alkanes C23H48 and C28H58 with particle sizes of the order of 100 nm, which were prepared by ultrasonic dispersion without the addition of surfactants, was studied. It is shown that at pH ranged from 4 to 12, the investigated n-alkanes form stable dispersions in water. They are characterized by a high zeta potential varying from −30 to −50 mV. The phase transition temperatures (melting point, crystallization temperature, formation of rotator phases) were determined for the dispersions using an optical method.
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Based on the materials of the XXI Mendeleev Congress on General and Applied Chemistry (September 9–13, 2019, St. Petersburg, Russia).
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1306–1310, July, 2020.
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Kuryakov, V.N., Ivanova, D.D. & Kienskaya, K.I. Study of the physicochemical characteristics of dispersions of n-alkanes C23H48 and C28H58 in water: zeta potential and temperatures of phase transitions. Russ Chem Bull 69, 1306–1310 (2020). https://doi.org/10.1007/s11172-020-2902-8
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DOI: https://doi.org/10.1007/s11172-020-2902-8