The Experts below are selected from a list of 75 Experts worldwide ranked by ideXlab platform
F. S. Radchenko - One of the best experts on this subject based on the ideXlab platform.
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A study of structural and molecular weight characteristics of poly(Aluminum Hydroxychloride) nanoparticles by small-angle X-ray scattering and sedimentation analysis
Nanotechnologies in Russia, 2009Co-Authors: A. S. Ozerin, F. S. Radchenko, G. I. Timofeeva, I. A. NovakovAbstract:It has been established by small-angle X-ray scattering and sedimentation analysis that aqueous solutions of poly(Aluminum Hydroxychloride) are disperse systems comprising two types of nanoparticles considerably different in size. The volume content, molecular weights, radii of gyration, characteristic size, specific surface, fractal dimensions, and shape of poly(Aluminum Hydroxychloride) nanoparticles have been determined. The particles of poly(Aluminum Hydroxychloride) have been shown to be rather stable entities, and the addition of HCl has practically no effect on their molecular weight or structural characteristics.
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Properties of aqueous solutions of polymer-colloid complexes of polyethylenimine with Aluminum Hydroxychloride
Russian Journal of Applied Chemistry, 2007Co-Authors: I. A. Novakov, S. S. Radchenko, A. S. Pastukhov, F. S. RadchenkoAbstract:Turbidimetry and gel-permeation chromatography were applied to examine the composition of the polymer-colloid complexes of polyethylenimine with Aluminum Hydroxychloride. The size-distribution characteristics of the macromolecules of the polymer-colloid complexes were determined by photon correlation spectroscopy.
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The properties of aqueous solutions of polymer-colloid complexes of polyacrylamide with poly(Aluminum Hydroxychloride)
Polymer science. Series A Chemistry physics, 2005Co-Authors: Ivan A. Novakov, F. S. Radchenko, A. S. Pastukhov, I. M. PapisovAbstract:Composition of polycomplexes of polyacrylamide with Aluminum pentaHydroxychloride was found to vary over a wide range of molar ratios of the reactants. The formation of polycomplexes is accompanied by a decrease in the size of polyacrylamide macromolecular coils and deterioration of the solvent affinity. It was shown that the formation of bonds between polyacrylamide macromolecules and Aluminum pentaHydroxychloride particles is mainly due to donor-acceptor interactions.
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Structuring in Concentrated Solutions of High-Basicity Aluminum Hydroxychloride and in New Coagulant Formulations on Its Base
Russian Journal of Applied Chemistry, 2002Co-Authors: S. S. Radchenko, N. U. Bykadorov, I. A. Novakov, O. K. Zhokhova, E. E. Utkina, O. P. Otchenashev, F. S. RadchenkoAbstract:Gelation in concentrated solutions of high-basicity Aluminum Hydroxychloride in the presence of inorganic salts was studied. Comparative evaluation of the coagulation activities of Aluminum Hydroxychloride and solid formulations on its base in water purification was made.
I. A. Novakov - One of the best experts on this subject based on the ideXlab platform.
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Interaction of aluminoxane particles with weakly charged cationic polyelectrolytes
Journal of Applied Polymer Science, 2011Co-Authors: S. S. Radchenko, I. A. Novakov, A. S. Ozerin, Ph. S. Radchenko, Le Van Cong, P. S. Zel'tserAbstract:In terms of the known concepts about noncovalent bonds in polycomplexes, the unusual case of interaction between positively charged aluminoxane particles (AP) ∼ 4.6 nm in size, which comprise the main portion of the dispersed phase in the sols of poly(Aluminum Hydroxychloride) (PAHC), and weakly charged cationic polyelectrolytes from the Praestol, Organopol, and Zetag series (WCPE) has been examined. Using viscometry, turbidimetry, and elemental analysis, it has been found that interaction between these compounds proceeds if the content of cationic groups in the polyelectrolyte is small and ions of a low-molecular-weight electrolyte occur in solution. Under the given conditions, the electrostatic repulsion of likely charged reagents does not manifest itself but other kinds of noncovalent interactions are realized that lead to formation of water-soluble polymer-colloid complexes (PCCs). Fully charged polyelectrolytes are incapable of such interactions because of a strong electrostatic repulsion of reagents. The scheme illustrating formation of PCC has advanced. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
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A study of structural and molecular weight characteristics of poly(Aluminum Hydroxychloride) nanoparticles by small-angle X-ray scattering and sedimentation analysis
Nanotechnologies in Russia, 2009Co-Authors: A. S. Ozerin, F. S. Radchenko, G. I. Timofeeva, I. A. NovakovAbstract:It has been established by small-angle X-ray scattering and sedimentation analysis that aqueous solutions of poly(Aluminum Hydroxychloride) are disperse systems comprising two types of nanoparticles considerably different in size. The volume content, molecular weights, radii of gyration, characteristic size, specific surface, fractal dimensions, and shape of poly(Aluminum Hydroxychloride) nanoparticles have been determined. The particles of poly(Aluminum Hydroxychloride) have been shown to be rather stable entities, and the addition of HCl has practically no effect on their molecular weight or structural characteristics.
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Properties of aqueous solutions of polymer-colloid complexes of polyethylenimine with Aluminum Hydroxychloride
Russian Journal of Applied Chemistry, 2007Co-Authors: I. A. Novakov, S. S. Radchenko, A. S. Pastukhov, F. S. RadchenkoAbstract:Turbidimetry and gel-permeation chromatography were applied to examine the composition of the polymer-colloid complexes of polyethylenimine with Aluminum Hydroxychloride. The size-distribution characteristics of the macromolecules of the polymer-colloid complexes were determined by photon correlation spectroscopy.
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Structuring in Concentrated Solutions of High-Basicity Aluminum Hydroxychloride and in New Coagulant Formulations on Its Base
Russian Journal of Applied Chemistry, 2002Co-Authors: S. S. Radchenko, N. U. Bykadorov, I. A. Novakov, O. K. Zhokhova, E. E. Utkina, O. P. Otchenashev, F. S. RadchenkoAbstract:Gelation in concentrated solutions of high-basicity Aluminum Hydroxychloride in the presence of inorganic salts was studied. Comparative evaluation of the coagulation activities of Aluminum Hydroxychloride and solid formulations on its base in water purification was made.
S. S. Radchenko - One of the best experts on this subject based on the ideXlab platform.
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Interaction of aluminoxane particles with weakly charged cationic polyelectrolytes
Journal of Applied Polymer Science, 2011Co-Authors: S. S. Radchenko, I. A. Novakov, A. S. Ozerin, Ph. S. Radchenko, Le Van Cong, P. S. Zel'tserAbstract:In terms of the known concepts about noncovalent bonds in polycomplexes, the unusual case of interaction between positively charged aluminoxane particles (AP) ∼ 4.6 nm in size, which comprise the main portion of the dispersed phase in the sols of poly(Aluminum Hydroxychloride) (PAHC), and weakly charged cationic polyelectrolytes from the Praestol, Organopol, and Zetag series (WCPE) has been examined. Using viscometry, turbidimetry, and elemental analysis, it has been found that interaction between these compounds proceeds if the content of cationic groups in the polyelectrolyte is small and ions of a low-molecular-weight electrolyte occur in solution. Under the given conditions, the electrostatic repulsion of likely charged reagents does not manifest itself but other kinds of noncovalent interactions are realized that lead to formation of water-soluble polymer-colloid complexes (PCCs). Fully charged polyelectrolytes are incapable of such interactions because of a strong electrostatic repulsion of reagents. The scheme illustrating formation of PCC has advanced. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
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Properties of aqueous solutions of polymer-colloid complexes of polyethylenimine with Aluminum Hydroxychloride
Russian Journal of Applied Chemistry, 2007Co-Authors: I. A. Novakov, S. S. Radchenko, A. S. Pastukhov, F. S. RadchenkoAbstract:Turbidimetry and gel-permeation chromatography were applied to examine the composition of the polymer-colloid complexes of polyethylenimine with Aluminum Hydroxychloride. The size-distribution characteristics of the macromolecules of the polymer-colloid complexes were determined by photon correlation spectroscopy.
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Structuring in Concentrated Solutions of High-Basicity Aluminum Hydroxychloride and in New Coagulant Formulations on Its Base
Russian Journal of Applied Chemistry, 2002Co-Authors: S. S. Radchenko, N. U. Bykadorov, I. A. Novakov, O. K. Zhokhova, E. E. Utkina, O. P. Otchenashev, F. S. RadchenkoAbstract:Gelation in concentrated solutions of high-basicity Aluminum Hydroxychloride in the presence of inorganic salts was studied. Comparative evaluation of the coagulation activities of Aluminum Hydroxychloride and solid formulations on its base in water purification was made.
E. A. Karpychev - One of the best experts on this subject based on the ideXlab platform.
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A study and selection of conditions for coagulating water at OAO Severstal’s cogeneration station
Thermal Engineering, 2010Co-Authors: B. M. Larin, M. Yu. Oparin, E. A. KarpychevAbstract:Laboratory studies on determining the efficiency of purifying low-mineralized water with an increased content of organic substances by means of different coagulants and flocculants are carried out. The best results are obtained for Aluminum Hydroxychloride and Aluminum sulfate with adding small quantities of type 2520TR flocculant produced by Ashland and AN-910 PWG flocculant produced by SNF. Results obtained from industrial tests carried out in a horizontal plate-type clarifier are presented.
A. S. Pastukhov - One of the best experts on this subject based on the ideXlab platform.
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Properties of aqueous solutions of polymer-colloid complexes of polyethylenimine with Aluminum Hydroxychloride
Russian Journal of Applied Chemistry, 2007Co-Authors: I. A. Novakov, S. S. Radchenko, A. S. Pastukhov, F. S. RadchenkoAbstract:Turbidimetry and gel-permeation chromatography were applied to examine the composition of the polymer-colloid complexes of polyethylenimine with Aluminum Hydroxychloride. The size-distribution characteristics of the macromolecules of the polymer-colloid complexes were determined by photon correlation spectroscopy.
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The properties of aqueous solutions of polymer-colloid complexes of polyacrylamide with poly(Aluminum Hydroxychloride)
Polymer science. Series A Chemistry physics, 2005Co-Authors: Ivan A. Novakov, F. S. Radchenko, A. S. Pastukhov, I. M. PapisovAbstract:Composition of polycomplexes of polyacrylamide with Aluminum pentaHydroxychloride was found to vary over a wide range of molar ratios of the reactants. The formation of polycomplexes is accompanied by a decrease in the size of polyacrylamide macromolecular coils and deterioration of the solvent affinity. It was shown that the formation of bonds between polyacrylamide macromolecules and Aluminum pentaHydroxychloride particles is mainly due to donor-acceptor interactions.
