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Poyarkova T.N.,Voronezh State University | Kudrina G.V.,Voronezh State Academy of Technology
Russian Journal of Applied Chemistry | Year: 2010

Adsorption characteristics of surfactants prepared from sunflower oil production wastes were evaluated. The polymerization kinetics in preparation of polystyrene latexes using the synthesized emulsifiers was studied. © 2010 Pleiades Publishing, Ltd. Source


Nikulin S.S.,Voronezh State Academy of Forestry Engineering | Poyarkova T.N.,Voronezh State University | Misin V.M.,Russian Academy of Sciences | Karmanova O.V.,Voronezh State Academy of Technology
Russian Journal of Applied Chemistry | Year: 2010

The effect of additions of an organic cationic electrolyte, N,N-dimethyl-N,N-diallylammonium chloride, on the threshold of rapid coagulation, duration of the first coagulation step, and values of the 1-min and maximal turbidity was examined. The coagulating performance of additives in recovery of rubber from SKS-30 ARK butadiene-styrene latex was studied in relation to the concentrations of the dispersed phase and sulfuric acid and to temperature. © Pleiades Publishing, Ltd., 2010. Source


Nikulin S.S.,Voronezh State Academy of Technology | Poyarkova T.N.,Voronezh State University | Misin V.M.,Russian Academy of Sciences
Russian Journal of Applied Chemistry | Year: 2011

The flocculating performance of a cationic polyelectrolyte, copolymer of N,N-dimethyl-N,N-diallylammonium chloride with acrylamide, in the recovery of butadiene-styrene rubber from latex was studied in relation to the concentrations of the dispersed phase and acidifying agent and to the temperature. © 2011 Pleiades Publishing, Ltd. Source


Suntsov Yu.K.,Voronezh State Academy of Technology | Goryunov V.A.,Voronezh State Academy of Technology
Russian Journal of Physical Chemistry A | Year: 2012

Boiling temperatures of five binary systems are measured by ebuliometer in the pressure range of 5.333-101.3 kPa. The compositions of equilibrium vapor phases in the systems are calculated using the constructed saturated vapor pressure isotherms as a base. The excess Gibbs energies, excess enthalpies, and excess entropies of solutions are calculated from our data on liquid-vapor equilibria. Regularities in the changes of phase equilibria and thermodynamic properties of solutions with the composition and temperature of the system are established. Vapor-liquid equilibria in the systems are described by the Wilson and NRTL equations. © Pleiades Publishing, Ltd., 2012. Source


Korenman Ya.I.,Voronezh State Academy of Technology | Mokshina N.Ya.,Military Aviation Engineering University | Zykov A.V.,Voronezh State Academy of Technology | Bykovskii D.V.,Voronezh State University | Shatalov G.V.,Voronezh State University
Russian Journal of Physical Chemistry A | Year: 2011

Common regularities in the extraction of vitamins B1, B 2, B6, and B12 from aqueous solutions of polymers (poly-N-vinylpyrrolidone, poly-N-vinylcaprolactam, and polyacrylamide) are studied. The effect of the polymer's concentration and its structure on the distribution coefficients and the degree of extraction of the vitamins is established. Effective systems for extracting B group vitamins from water-salt solutions are developed as a result of screening stable two-phase systems based on water-soluble polymers. © 2011 Pleiades Publishing, Ltd. Source

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