Центральная Научная Библиотека УрО РАН

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   S 98


    Synthesis and properties of epoxy-anhydride polymers modified with polyfluorolakyl-substituted oxiranes in the course of curing [Electronic resource] / M. S. Fedoseev, L. F. Derzhavinskaya, V. I. Karmanov, D. N. Bazhin, A. Ya. Zapevalov, T. I. Gorbunova, V. I. Saloutin // Russian Journal of Applied Chemistry. - 2010. - Vol. 83, № 4. - P723-727 : табл., граф. - Bibliogr. : p. 723-727 (24 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
POLYMERS -- EPOXY-ANHYDRIDE POLYMERS -- OXIRANES -- POLYFLUOROLAKYL-SUBSTITUTED OXIRANES -- CURING
Аннотация: Epoxy-anhydride polymers based on N,N,O-triglycidyl-p-aminophenol and isomethyltetrahydrophthalic anhydride were synthesized in the presence of new active modifiers, polyfluoroalkyl glycidyl ethers. The kinetics of the reactions of the modifiers with the anhydride were studied by differential scanning calorimetry and IR spectroscopy. The physicomechanical characteristics, glass transition points, and water absorption of the polymers were determined.

\\\\Expert2\\nbo\\Russian Journal of Applied Chemistry\\2010, v. 83, N 4, p.723-727.pdf
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   S 70


    Sol-Gel Synthesis and Physicochemical Properties of Organosilicon Materials Functionalized by Amino Groups / L. K. Neudachina, N. V. Lakiza, A. V. Pestov, V. A. Osipova, L. V. Adamova, E. M. Gorbunova // Glass Physics and Chemistry. - 2011. - Vol.37, № 5. - С. 537-544

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
"SOL-GEL" MATERIALS -- AMINOPOLYSILOXANES -- SPECIFIC SURFACE AREA
Аннотация: The hybrid materials based on polysiloxane modified by amino groups have been synthesized by the sol-gel method. Aminated polysiloxane has been prepared by the copolycondensation reaction of tetraethoxysilane with gamma-aminopropyltriethoxysilane (APS-1) and through the modification of the product (APS-2) of the hydrolysis of tetraethoxysilane by gamma-aminopropyltriethoxysilane. The composition of sorbents has been confirmed by the elemental analysis and IR Fourier spectroscopy. The high degree of sorption extraction of copper(II), nickel(II), cobalt(II), zinc(II), cadmium(II), and lead(II) ions in the case of their coexistence in an ammonia-acetate buffer solution has been observed for polysiloxanes APS-2. The synthesized surface-modified materials exhibit the highest selectivity to nickel(II) and cobalt(II) ions

\\\\Expert2\\nbo\\Glass Physics and Chemistry\\2011, V. 37, N 5, P.537-544.pdf
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   D 49


    Development of methods for preparation of Nd : YAG nanoparticles / I. S. Puzyrev, I. V. V'yukhina, M. Ivanov, Yu. G. Yatluk // Glass Physics and Chemistry. - 2012. - Vol.38, №4. - С. 427-430

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
SYNTHESIS -- NANOSIZED PRECURSORS -- YTTRIUM-ALUMINUM
Аннотация: Methods for synthesis of nanosized precursors for the preparation of yttrium-aluminum garnet from organic-inorganic derivatives of yttrium and aluminum have been developed. It has been shown that most of the methods for carrying out the process result in the formation of precursors with high specific surface area. The precursor obtained using nanosized powder of aluminum oxide and yttrium acetylacetonate is the least agglomerated. The data obtained can be used when preparing optical ceramic from yttrium-aluminum garnet

\\\\Expert2\\nbo\\Glass Physics and Chemistry\\2012, V. 38, N 4, P.427-430.pdf
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   T 44


    Thermal stability of new sorption materials based on polysiloxanes / L. K. Neudachina, A. Y. Golub, E. M. Gorbunova, Yu. G. Yatluk // Glass Physics and Chemistry. - 2011. - Vol.37, №6. - С. 603-612

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
THERMAL STABILITY -- THIOCARBAMOYLATED POLYSILOXANES -- SILOXANE MATRIX
Аннотация: The thermal stability of the unmodified, aminated, and thiocarbamoylated polysiloxanes has been studied. The siloxane matrix is stable in the temperature range up to 800°C. For the first time, mass spectrometry has been applied to the analysis of the composition of the gaseous products of thermal decomposition of the studied polysiloxanes. It has been shown that, in the process of thermal decomposition, the terminal functional groups are detached and oxidized. Water, ammonia, nitrogen, carbon, and sulfur (in the case of thiourea-modified sorbent) oxides are formed predominantly. The quantitative removal of functional groups during heating up to 800°C has been confirmed by IR spectroscopy. A mechanism of thermal decomposition of polysiloxane xerogels has been proposed. It has been found that adsorption of platinum increases the thermal stability of the samples

\\\\Expert2\\nbo\\Glass Physics and Chemistry\\2011, V. 37, N 6, P.603-612.pdf
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   I-83


    Iptycene-Based Fluorescent Sensors for Nitroaromatics and TNT / P. Anzenbacher, Jr. L. Mosca, M. A. Palacios, G. V. Zyryanov, P. Koutnik // Chemistry - A European Journal. - 2012. - Vol.18, №40. - С. 12712-12718. - Bibliogr. : p. 12718 (15 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
EXPLOSIVES -- FLUORESCENCE SPECTROSCOPY -- NANOFIBRES -- SENSORS
Аннотация: Small-molecule fluorescent sensors (1–5) for the recognition of nitroaromatic compounds, such as 2,4-dinitrotoluene and the explosive TNT, were obtained by using a three-step dehydrohalogenation cycloaddition protocol. The interaction of the receptors and nitroaromatics was studied both in solution and in the solid state by using fluorescence spectroscopy and X-ray crystallography, respectively. It is shown that the iptycene receptors 1–5 provide a cavity suitable for binding nitroaromatic compounds in an edge-to-face mode, rather than simple ring-stacking interactions. The results obtained inspired us to develop an inexpensive, reliable and robust sensor for vapour detection of explosives. Polymer nanofibres are particularly suitable for the production of such TNT sensors as they accelerate the mass exchange between the polymer and the vapours of TNT. Quenching of the sensors took place within 1 min compared to 10 min for a glass-slide assay. Hence, the sensor performance can be improved by optimising the matrix material and morphology without resynthesising the sensor moieties

\\\\expert2\\NBO\\Chemistry - A European Journal\\2012. v. 18, N 40. p. 12712.pdf
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   S 70


    Sol-gel synthesis of titanum dioxide by hydrolysis of titanium glycerolates and peroxides [Electronic resource] / V. A. Osipova, G. S. Zakharova, E. Andreikov, Yu. G. Yatluk, I. Puzyrev // Glass Physics and Chemistry. - 2013. - Vol.39, №4. - С. 398-402. - Bibliogr. : p. 402 (11 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PHOTOCATALYSIS -- SOL-GEL -- TITANIUM DIOXIDE
Аннотация: The sol-gel synthesis of titanium dioxide from titanium glycerolate (TG) and titanyl sulfate was studied. The effect of hydrothermal treatment in an autoclave at 130 C and refluxing TG with the peroxo titanium acid gel on the product properties, i.e.; morphology of the nanoparticles and their aggregates, as well as their ability to adsorption and photocatalytic degradation of methylene blue in aqueous solutions was discussed

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    Investigation of hydrogen transfer from coal tar pitch and petroleum pitches using a-methylstyrene as hydrogen acceptor / E. I. Andreikov, A. P. Krasikova, M. G. Pervova, A. S. Kabak // Chemistry for sustainable development. - 2022. - Vol. 30, № 5. - P446-454
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
A-METHYLSTYRENE -- COAL TAR PITCH -- PETROLEUM PITCHES
Аннотация: The reaction of hydrogen transfer from coal tar pitch and petroleum pitches to Α-methylstyrene with the formation of cumene was investigated in glass ampoules within the temperature range of 200-360 °C and reaction time of 15-60 min and when passing Α-methylstyrene through a layer of coal tar pitch. It is shown that the formation of non-chromatographable products of Α-methylstyrene condensation with polycyclic aromatic compounds of pitches occurs simultaneously. The dependences of Α-methylstyrene conversion, the selectivity for cumene and condensation products on the temperature and reaction time, the ratio of pitch/Α-methylstyrene are determined. The amount of hydrogen transferred from pitches to Α-methylstyrene was determined, and the results obtained were compared with the literature data on the transfer of hydrogen from pitches obtained using anthracene as a hydrogen acceptor.

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    Combination of fluorescent and spin labels: a powerful method for the optimization of hydrophilic membranes for the separation of oil-in-water emulsions / R. S. Alqubelat, A. D. Kuznetsova, D. O. Antonov, M. A. Mironov // Chimica Techno Acta. - 2023. - Vol. 10, № 4. - P202310415
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
FLUORESCENT LABEL -- SPIN LABEL -- OIL-IN-WATER EMULSION
Аннотация: A new method for assessing the quality of fibre coating based on a combination of fluorescence microscopy and electron paramagnetic resonance is presented in this work. An influence of the carboxymethylcellulose/polyvinylamine gel preparation method on the mobility of the spin label was established. The mobility of the spin label changes from 3.5 ns in the case of a polyvinylamine solution to 12.8 ns in the case of a cross-linked gel on the surface of the glass fibre. A qualitative relationship was found between the mobility of the spin label in the gel applied to the glass fibre and the rate of spreading of crude oil over its surface. This method can be used to make membranes for the separation of water-in-oil emulsions.

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