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46 results on '"Malyshkina, Inna"'

2. Contributors

Author

Abolhasani, Mohammad Mahdi, primary, Altomare, Aldo, additional, Asadi, Kamal, additional, Bae, Insung, additional, Berggren, Magnus, additional, Bozorg, Maryam, additional, Cardoso, V.F., additional, Carvalho, E.O., additional, Cornelissen, Tim, additional, Correia, D.M., additional, Costa, C.M., additional, Cui, Heng, additional, Fabiano, Simone, additional, Gradov, Oleg V., additional, Gradova, Margaret A., additional, Gruverman, Alexei, additional, Han, Zhubing, additional, He, Wen, additional, Horiuchi, Sachio, additional, Ishibashi, Shoji, additional, Kemerink, Martijn, additional, Khaliq, Jibran, additional, Khanbareh, Hamideh, additional, Kochervinskii, Valentin V., additional, Lanceros-Mendez, S., additional, Loos, Katja, additional, Lu, Haidong, additional, Ma, Rujun, additional, Malyshkina, Inna A., additional, Marques-Almeida, T., additional, Martins, P.M., additional, Meira, R.M., additional, Michels, Jasper J., additional, Park, Cheolmin, additional, Pei, Qibing, additional, Peřinka, N., additional, Rasheed, Aatif, additional, Rodrigues-Marinho, T., additional, Sani, Negar, additional, Sharifi-Dehsari, Hamed, additional, Tokura, Yoshinori, additional, Wang, Qing, additional, Zhang, Zhongbo, additional, Zhou, Yao, additional, and Zhu, Lei, additional

Published
2022
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5. Dielectric Performance of UHMWPE-MgFe2O4 Composites Depending on Polymer Crystallinity, and the Concentration and Size of Mechanochemically Synthesized Ferrite Particles

Author

Kiseleva, Tatiana, primary, Grigoreva, Tatiana, additional, Kovaliova, Svetlana, additional, Il’in, Maxim, additional, Yakuta, Ekaterina, additional, Devyatkina, Evgeniya, additional, Malyshkina, Inna, additional, Ivanenko, Ilya, additional, Vosmerikov, Sergey, additional, and Lyakhov, Nikolay, additional

Published
2023
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8. Optical and Electrophysical Properties of Vinylidene Fluoride/Hexafluoropropylene Ferroelectric Copolymer Films: Effect of Doping with Porphyrin Derivatives

Author

Kochervinskii, Valentin V., primary, Gradova, Margaret A., additional, Gradov, Oleg V., additional, Sergeev, Andrey I., additional, Lobanov, Anton V., additional, Buryanskaya, Evgeniya L., additional, Ilina, Tatiana S., additional, Kiselev, Dmitry A., additional, Malyshkina, Inna A., additional, and Kirakosyan, Gayane A., additional

Published
2023
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11. Dielectric Performance of UHMWPE-MgFe 2 O 4 Composites Depending on Polymer Crystallinity, and the Concentration and Size of Mechanochemically Synthesized Ferrite Particles.

Author

Kiseleva, Tatiana, Grigoreva, Tatiana, Kovaliova, Svetlana, Il'in, Maxim, Yakuta, Ekaterina, Devyatkina, Evgeniya, Malyshkina, Inna, Ivanenko, Ilya, Vosmerikov, Sergey, and Lyakhov, Nikolay

Subjects
FERRITES, POLYETHYLENE, CRYSTALLINITY, COMPOSITE materials, SCANNING electron microscopy
Abstract

Mechanochemically synthesized particles of two types of magnesium ferrites, one of which with structural distortions and an average size of 170 nm, and another that is highly crystalline with an average size of 900 nm, were introduced into a matrix of ultra-high-molecular-weight polyethylene via the milling processing. The final material has been formed by hot pressing mechanocomposites based on ultra-high-molecular-weight polyethylene and magnesium ferrite particles of various fineness and concentration. Structural characteristics were studied using scanning electron microscopy, differential scanning calorimetry and X-ray diffraction analysis. The dielectric properties of the obtained composites were analyzed by testing the frequency dependence of the permeability, dielectric losses, and conductivity. The effect of filler concentration and particle size, as well as the crystallinity of the polymer, on the dielectric properties of the composite material were studied. [ABSTRACT FROM AUTHOR]

Published
2023
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12. Influence of physical aging of ferroelectric vinylidene fluoride copolymer films on their structural and electrophysical characteristics

Author

Kochervinskii, Valentin V., primary, Gradova, Margaret A., additional, Gradov, Oleg V., additional, Kirakosyan, Gayane A., additional, Kiselev, Dmitry A., additional, Buzin, Mikhail I., additional, Lokshin, Boris V., additional, Korlyukov, Alexander A., additional, Maltsev, Alexander A., additional, and Malyshkina, Inna A., additional

Published
2022
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16. Conductivity, its anisotropy and changes as a manifestation of the features of the atomic and real structures of superprotonic [K1–x(NH4)x]3H(SO4)2 crystals.

Author

Selezneva, Elena, Makarova, Irina, Gainutdinov, Radmir, Tolstikhina, Alla, Malyshkina, Inna, Somov, Nikolai, and Chuprunov, Evgeniy

Subjects
ATOMIC structure, ANISOTROPY, ATOMIC force microscopy, SINGLE crystals, CRYSTALS, IONIC conductivity
Abstract

Single crystals of [K1–x(NH4)x]3H(SO4)2 (x ≥ 0.57) grown in the K3H(SO4)2–(NH4)3H(SO4)2–H2O water–salt system are studied. The atomic structure including H atoms was determined at room temperature using X‐ray structural analysis. [K1–x(NH4)x]3H(SO4)2 (x ≥ 0.57) crystals have trigonal symmetry and disordered hydrogen‐bond networks at ambient conditions similar to the high‐temperature phases of K3H(SO4)2, (NH4)3H(SO4)2 and other superprotonic compounds M3H(AO4)2. Impedance measurements performed on single crystals show high values of conductivity characteristic for superprotonic phases. Using the methods of impedance spectroscopy and atomic force microscopy, a significant anisotropy of the conductivity of crystals has been detected. It was also shown that there is a qualitative correlation of bulk and local conductivity measured for samples of the same composition and orientation at room temperature, which is due to the peculiarities of their crystal structure. [ABSTRACT FROM AUTHOR]

Published
2023
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20. An effect of the electrode material on space charge relaxation in ferroelectric copolymers of vinylidene fluoride.

Author

Kochervinskii, Valentin, Malyshkina, Inna, Pavlov, Alexey, Pakuro, Natalia, Bessonova, Natalia, Shmakova, Nina, Bedin, Sergey, Chubunova, Elena, and Lebedinskii, Yuri

Subjects
*ELECTRODES, *MATHEMATICAL models, *INDUSTRIAL contamination, *ISOTROPIC properties, *POLARIZATION (Electricity), *ELECTRIC discharges
Abstract

Processes of relaxation of space charges formed by impurities carriers in isotropic films of vinylidene fluoride and tetrafluoroethylene copolymers of the composition 71/29 and 94/6 were studied. Al and Au symmetric electrodes deposited by evaporation in vacuum have been used. In the case of Al electrodes at temperatures above 100 °C, giant low frequency dielectric dispersion was observed, while it is absent in films with Au electrodes. Causes of this phenomenon were studied by the X-ray photoelectron spectroscopy. It was shown that at Al deposition, new functional groups, such as Al-C, Al-F, and Al2O3, which are not characteristic of the copolymer film surface, formed. They were supposed to be traps for impurity carriers and because of this the electrode became partially blocked. This led to appearance of the giant electrode polarization on the metal-polymer boundary, which did not take place in the case of Au electrodes. Parameters of the Au4f line for the copolymer with different contents of fluorine atoms in the chain were analyzed. An increase in the number of these atoms was shown to result in the line shift to higher energies. This phenomenon was associated with an increase in the shift of the electron density from Au atoms to the F ones which has a high affinity to electrons. [ABSTRACT FROM AUTHOR]

Published
2015
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21. Influence of parameters of molecular mobility on formation of structure in ferroelectric vinylidene fluoride copolymers.

Author

Kochervinskii, Valentin, Malyshkina, Inna, Pavlov, Alexey, Bessonova, Natalia, Korlyukov, Alexey, Volkov, Vladimir, Kozlova, Nina, and Shmakova, Nina

Subjects
*DIFLUOROETHYLENE, *COPOLYMERS, *FERROELECTRICITY, *GLASS transition temperature, *INFRARED spectroscopy, *X-ray spectroscopy, *SMALL-angle X-ray scattering
Abstract

The low-temperature molecular mobility has been studied by dielectric relaxation spectroscopy on the bulk films of statistic copolymers of vinylidene fluoride (VDF) with tetra- (TFE) and trifluoroethylene obtained by crystallization from a solution in acetone. The results show that activation energy of the kinetic units in the glassy state depends significantly on the concentration of polar groups. The cooperative mobility above the glass transition temperature is described by Vogel-Tamman-Fulcher equation; the lowest value of the effective activation energy was found in the copolymer with highest amount of non-polar TFE content. It has been shown that the parameters of the dynamics are related to the structural parameters obtained by infrared spectroscopy, wide-angle X-ray Spectroscopy, and small-angle X-ray scattering. In particular, the largest crystals and the highest value of the "large" period have been detected in VDF/TFE copolymer with lowest activation parameters of microbrownian and local mobility. Number of lamellar crystals in stacks is determined by the concentration of VDF polar groups in copolymer chain. [ABSTRACT FROM AUTHOR]

Published
2015
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25. The replacements in the cation sublattice in superprotonic crystals

Author

Selezneva, Elena V., primary, Makarova, Irina P., additional, Grebenev, Vadim V., additional, Komornikov, Vladimir A., additional, Chitra, Radhakrishnan, additional, Choudhury, Rajul Ranjan, additional, Malyshkina, Inna A., additional, Gavrilova, Nadezhda D., additional, and Novik, Vitalii K., additional

Published
2017
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31. Polymeric Ionic Liquids: Comparison of Polycations and Polyanions

Author

Shaplov, Alexander S., primary, Vlasov, Petr S., additional, Lozinskaya, Elena I., additional, Ponkratov, Denis O., additional, Malyshkina, Inna A., additional, Vidal, Frederic, additional, Okatova, Olga V., additional, Pavlov, George M., additional, Wandrey, Christine, additional, Bhide, Amrtha, additional, Schönhoff, Monika, additional, and Vygodskii, Yakov S., additional

Published
2011
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32. Polymerization of the new double-charged monomer bis-1,3(N ,N ,N -trimethylammonium dicyanamide)-2-propylmethacrylate and ionic conductivity of the novel polyelectrolytes

Author

Shaplov, Alexander S., primary, Lozinskaya, Elena I., additional, Losada, Ricardo, additional, Wandrey, Christine, additional, Zdvizhkov, Alexander T., additional, Korlyukov, Alexander A., additional, Lyssenko, Konstantin A., additional, Malyshkina, Inna A., additional, and Vygodskii, Yakov S., additional

Published
2011
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33. New ionic liquids with hydrolytically stable anions as alternatives to hexafluorophosphate and tetrafluoroborate salts in the free radical polymerization and preparation of ion-conducting composites

Author

Vygodskii, Yakov S, primary, Sapozhnikov, Dmitrii A, additional, Shaplov, Alexander S, additional, Lozinskaya, Elena I, additional, Ignat'Ev, Nikolai V, additional, Schulte, Michael, additional, Vlasov, Petr S, additional, and Malyshkina, Inna A, additional

Published
2010
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39. The influence of ionic liquid's nature on free radical polymerization of vinyl monomers and ionic conductivity of the obtained polymeric materials

Author

Vygodskii, Yakov S., primary, Mel'nik, Olga A., additional, Lozinskaya, Elena I., additional, Shaplov, Alexander S., additional, Malyshkina, Inna A., additional, Gavrilova, Nadejda D., additional, Lyssenko, Konstantin A., additional, Antipin, Mikhail Yu., additional, Golovanov, Denis G., additional, Korlyukov, Alexander A., additional, Ignat'ev, Nikolai, additional, and Welz-Biermann, Urs, additional

Published
2007
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43. Polymerization of the new double-charged monomer bis-1,3( N, N, N-trimethylammonium dicyanamide)-2-propylmethacrylate and ionic conductivity of the novel polyelectrolytes.

Author

Shaplov, Alexander S., Lozinskaya, Elena I., Losada, Ricardo, Wandrey, Christine, Zdvizhkov, Alexander T., Korlyukov, Alexander A., Lyssenko, Konstantin A., Malyshkina, Inna A., and Vygodskii, Yakov S.

Subjects
CONDUCTING polymers, ELECTROLYTES, ELECTRIC batteries, IONIC liquids, MONOMERS
Abstract

The achievement of high ionic conductivity in single-ion conducting polymer electrolytes is one of the important aims for various electrochemical devices including modern lithium batteries. One way to enhance the ionic conductivity in polyelectrolyte systems is to increase the quantity of charge carriers in each monomer unit. Highly charged poly(bis-1,3( N, N, N-trimethylammonium)-2-propylmethacrylate) with one of the most conducting anions, namely dicyanamide, was prepared via free radical bulk polymerization or using ionic liquids as reaction medium. The cationic polymers of the double-charged monomer have molar masses up to = 1,830,000 g/mol and the ionic conductivity equal to 5.51 × 10 Scm at 25°C. The film forming ability, crystallinity, thermal stability, and glass transition temperatures of the new polymeric ionic liquids obtained from detailed studies are presented. Copyright © 2009 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Published
2011
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44. New ionic liquids with hydrolytically stable anions as alternatives to hexafluorophosphate and tetrafluoroborate salts in the free radical polymerization and preparation of ion-conducting composites

Author

Vygodskii, Yakov S, Sapozhnikov, Dmitrii A, Shaplov, Alexander S, Lozinskaya, Elena I, Ignat'Ev, Nikolai V, Schulte, Michael, Vlasov, Petr S, and Malyshkina, Inna A

Abstract

The main objective of this study was to replace the traditionally used hydrolytically unstable PF6and BF4ionic solvents with new, stable ionic liquids (ILs) and to investigate the potential of ILs in formulation of the polymers based on methyl methacrylate and acrylonitrile with narrow polydispersities, high yields and molecular weights. Various ILs with four anions, namely, tris(pentafluoroethyl)trifluorophosphate, trifluoromethanesulfonate, trifluoroacetate and tetracyanoborate, were tested. The influence of the IL's characteristics on the free radical polymerization process was found to be significant. Trifluoromethanesulfonate- and trifluoroacetate-based ionic solvents provide the formation of polymers with the highest molecular weight (Mr˜8.8 × 105for polyacrylonitrile (PAN) and Mw˜18.9 × 105for polymethylmethacrylate (PMMA)) in quantitative yield (PAN, 96%; PMMA, 92%). Taking into account, the high ionic conductivity and satisfactory electrochemical stability of the tetracyanoborate-based ILs, composite films derived from PAN and B(CN)4ILs were prepared and their physico–chemical properties were investigated. The nature of the cation strongly influences the properties of the resulting composite films, namely, their flexibility, transparency, surface morphology and ionic conductivity (the maximum conductivity was found to be 1.0 × 10-2?S?cm-1at 25?°C).

Published
2011
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45. Polymerization of the new double-charged monomer bis-1,3(N,N,N trimethylammonium dicyanamide)-2-propylmethacrylate and ionic conductivity of the novel polyelectrolytes

Author

Shaplov, Alexander S., Lozinskay, Elena I., Losada Mateo, Ricardo, Wandrey, Christine, Zdvizhkov, Alexander T., Korlyukov, Alexander A., Lyssenko, Konstantin A., Malyshkina, Inna A., and Vygodskii, Yakov S.

Subjects
ionic liquids, polymer electrolytes, ionic conductivity, conducting polymers
Abstract

The achievement of high ionic conductivity in single-ion conducting polymer electrolytes is one of the important aims for various electrochemical devices including modern lithium batteries. One way to enhance the ionic conductivity in polyelectrolyte systems is to increase the quantity of charge carriers in each monomer unit. Highly charged poly(bis-1,3(N,N,N-trimethylammonium)-2-propylmethacrylate) with one of the most conducting anions, namely dicyanamide, was prepared via free radical bulk polymerization or using ionic liquids as reaction medium. The cationic polymers of the double-charged monomer have molar masses up to equation image = 1,830,000 g/mol and the ionic conductivity equal to 5.51 × 10−5 S/cm at 25°C. The film forming ability, crystallinity, thermal stability, and glass transition temperatures of the new polymeric ionic liquids obtained from detailed studies are presented

46. Conductivity, its anisotropy and changes as a manifestation of the features of the atomic and real structures of superprotonic [K 1-x (NH 4 ) x ] 3 H(SO 4 ) 2 crystals.

Author

Selezneva E, Makarova I, Gainutdinov R, Tolstikhina A, Malyshkina I, Somov N, and Chuprunov E

Abstract

Single crystals of [K 1-x (NH 4 ) x ] 3 H(SO 4 ) 2 (x ≥ 0.57) grown in the K 3 H(SO 4 ) 2 -(NH 4 ) 3 H(SO 4 ) 2 -H 2 O water-salt system are studied. The atomic structure including H atoms was determined at room temperature using X-ray structural analysis. [K 1-x (NH 4 ) x ] 3 H(SO 4 ) 2 (x ≥ 0.57) crystals have trigonal symmetry and disordered hydrogen-bond networks at ambient conditions similar to the high-temperature phases of K 3 H(SO 4 ) 2 , (NH 4 ) 3 H(SO 4 ) 2 and other superprotonic compounds M 3 H(AO 4 ) 2 . Impedance measurements performed on single crystals show high values of conductivity characteristic for superprotonic phases. Using the methods of impedance spectroscopy and atomic force microscopy, a significant anisotropy of the conductivity of crystals has been detected. It was also shown that there is a qualitative correlation of bulk and local conductivity measured for samples of the same composition and orientation at room temperature, which is due to the peculiarities of their crystal structure.

Published
2023
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