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Your search keyword '"R. S. Davletbaev"' showing total 4 results
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4 results on '"R. S. Davletbaev"'

1. Gel-polymer electrolytes based on polyurethane ionomers for lithium power sources

Author

O. O. Sazonov, A. V. Yudina, O. V. Yarmolenko, A. A. Nizamov, G. R. Baymuratova, R. S. Davletbaev, and I. M. Davletbaeva

Subjects
Materials science, Polymer electrolytes, General Chemical Engineering, chemistry.chemical_element, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, chemistry.chemical_compound, chemistry, Chemical engineering, Lithium, 0210 nano-technology, Polyurethane
Abstract

Polyurethanes based on the aminoethers of ortho-phosphoric acid and polyisocyanates of an aliphatic nature were studied as a substrate for the preparation of a new polymer electrolyte.

Published
2021
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2. Polyurethane ionomers based on amino ethers of ortho-phosphoric acid

Author

Vladimir V. Klochkov, I. M. Davletbaeva, O. O. Sazonov, A. R. Fazlyev, S.V. Efimov, and R. S. Davletbaev

Subjects
chemistry.chemical_classification, integumentary system, organic chemicals, General Chemical Engineering, Chemical structure, 02 engineering and technology, General Chemistry, Polymer, Ion pairs, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, chemistry.chemical_compound, chemistry, Polyol, High adhesion, Triethanolamine, Polymer chemistry, medicine, 0210 nano-technology, Phosphoric acid, Polyurethane, medicine.drug
Abstract

The etherification of ortho-phosphoric acid with triethanolamine and polyoxypropylene glycol is studied. The reaction process is accompanied by the formation of hyperbranched amino ethers of ortho-phosphoric acid terminated by hydroxyl groups. A specific feature of the chemical structure of the compounds obtained is the existence of ion pairs in their structure separated in space. The reaction of the etherification of ortho-phosphoric acid with glycols becomes possible through the use of tertiary amines. The amino ethers of ortho-phosphoric acid are investigated as a polyol component for the synthesis of polyurethanes with high adhesion characteristics and strength properties. The experimental results presented allow us to relate polyurethanes obtained on the basis of ortho-phosphoric acid amino ethers to polymers of ionomeric nature.

Published
2019
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3. Water vapor permeable polyurethane films based on the hyperbranched aminoethers of boric acid

Author

S. E. Dulmaev, I. M. Davletbaeva, O. O. Sazonov, A. V. Klinov, A. M. Gumerov, and R. S. Davletbaev

Subjects
Steric effects, Materials science, General Chemical Engineering, Chemical structure, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Boric acid, chemistry.chemical_compound, chemistry, Chemical engineering, Ultimate tensile strength, Thermomechanical analysis, 0210 nano-technology, Water vapor, Polyurethane, Macromolecule
Abstract

The hyperbranched polymers have drawn intensive attention in the design of macromolecules and functional materials because of their unique physical and chemical properties resulting from the branched architecture and the high number of functional groups. In the present study, by means of light scattering, viscosimetry, thermomechanical analysis, tensile stress–strain, mechanical loss tangent and water vapor permeability measurements, we demonstrate the hierarchical macromolecular organization of organoboron polyurethanes synthesized using sterically hindered amino ethers (AEBA) of boric acid. It is shown that the water vapor permeability of polyurethanes obtained on the basis of sterically hindered aminoethers of boric acid is due to the peculiarities of the chemical structure of AEBA, which can exhibit an ionomeric nature and the presence of steric hindrances created in the hyperbranched structure of AEBA, which can lead to an increase in free volume in such polyurethanes.

Published
2019

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