Coagulation-condensation structure formation in aqueous suspensions of mixtures of sulfur and gypsum

  • K. Toshtay Al-Farabi Kazakh National University
  • K. Musabekov Al-Farabi Kazakh National University
  • S. Kumargaliyeva Al-Farabi Kazakh National University
  • С. Turganbay K.Satpaev Kazakh National technical University, Almaty
  • I. Bakhytkyzy Al-Farabi Kazakh National University
DOI: https://doi.org/10.15328/chemb_2013_1122-127
Keywords: sulfur, surface tension, surface-active agents (surfactants), sulfanol (sodium dodecyl benzene sulfonate), cetyl trimethylammonium bromide (CTAB

Abstract

The characteristics of structure formation in hydrosuspensions of powdered sulfur and its mixtures with gypsum was investigated. The effect of cationic (CTAB) and anionic (SDBS) surfactants on the surface tension of water; ζ-potential of the sulfur particles and wettability of sulfur was learned. Both surfactants at low concentrations; lead to an increase in plastic strength (Pm) of the suspension; and at high concentrations (above CMC) – they lead to Pm reduce. In addition; it was found that the surfactants substantially change ζ-potential of the sulfur particles – cationic surfactants  lead to charge exchange and anionic surfactants increase the negative charge of the particles. These changes are the result to restructuring in the adsorption layers of surfactants - the formation of a saturated mono-layer while up to Pm maximum; bilayer - after CMC (while the Pm is reducing).

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Published
2013-05-14
How to Cite
Toshtay, K., Musabekov, K., Kumargaliyeva, S., TurganbayС., & Bakhytkyzy, I. (2013). Coagulation-condensation structure formation in aqueous suspensions of mixtures of sulfur and gypsum. Chemical Bulletin of Kazakh National University, 69(1), 122-127. https://doi.org/https://doi.org/10.15328/chemb_2013_1122-127
Issue
Vol 69 No 1 (2013): Chemical Bulletin of Kazakh National University
Section
Colloid and Nano Chemistry
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