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  1. No Access

    Article

    Theoretical Study of the Grinding and Homogenization of a Binary Mixture of Reactive Powders in a Mechanical Activator

    A mathematical model in a macroscopic approximation is used to perform a theoretical study of solid-phase mechanochemical synthesis in a binary powder mixture during its mechanical processing in a mechanoactiv...

    O. V. Lapshin, V. V. Boldyrev, E. V. Boldyreva in Russian Journal of Physical Chemistry A (2021)

  2. No Access

    Article

    Role of Mixing and Milling in Mechanochemical Synthesis (Review)

    Selected topics of inorganic mechanochemical synthesis are discussed. Variant mechanochemical syntheses are considered. The ex situ and in situ/operando methods to monitor the process are discussed. Methods fo...

    O. V. Lapshin, E. V. Boldyreva, V. V. Boldyrev in Russian Journal of Inorganic Chemistry (2021)

  3. No Access

    Article

    Mathematical Model of the Grinding and Mixing of Powder Binary Solids in a High-Energy Mill

    A mathematical model is developed for macroscopic approximation and quantitative calculations of the dynamics of mixing of solid components of a binary powder mixture during its dispersion in a grinding unit. ...

    O. V. Lapshin, V. V. Boldyrev, E. V. Boldyreva in Russian Journal of Physical Chemistry A (2019)

  4. No Access

    Article

    A Model of Solid-Phase Synthesis in Binary Powder Mixtures with Allowance for Caking

    A mathematical model of solid-phase chemical synthesis in a binary powder mixture is constructed and studied with allowance for the shrinking of the mixture and the change in the reaction surface as a result o...

    V. K. Smolyakov, O. V. Lapshin, V. V. Boldyrev… in Russian Journal of Physical Chemistry A (2018)

  5. No Access

    Article

    Luminescence Spectroscopy as a Tool to Study the Amorphization of Indomethacin upon Co-Grinding with Polymers

    The possibility of using luminescence spectroscopy to study even the early stages of the amorphization of active pharmaceutical ingredients (APIs) during their co-grinding with different polymers has been demo...

    A. A. Politov, T. P. Shakhtshneider, E. V. Boldyreva… in Doklady Physical Chemistry (2018)

  6. No Access

    Article

    Mechanochemical processes with the reaction-induced mechanical activation. Chemo-mechanochemical effect

    The review addresses the special case of mechanical activation of solid-state chemical reactions when the stress field, strain, and defects in crystals are induced by the chemical reaction itself rather than b...

    V. V. Boldyrev in Russian Chemical Bulletin (2018)

  7. No Access

    Article

    Dynamics of the Homogenization of Binary Powder Mixtures

    The effect the initial structure of a two-component reaction powder mixture has on the dynamics of its isothermal homogenization is investigated. Relations for determining the duration of homogenization are ob...

    O. V. Lapshin, V. K. Smolyakov, E. V. Boldyreva… in Russian Journal of Physical Chemistry A (2018)

  8. No Access

    Article

    Inhibition of organic mechanochemical synthesis by water vapor

    The effect of water on the mechanochemical synthesis in the glycine–malonic acid system has been studied in different types of devices. Comparative studies of the hygroscopicity of the reagents and products ma...

    I. A. Tumanov, A. A. L. Michalchuk, A. A. Politov, E. V. Boldyreva… in Doklady Chemistry (2017)

  9. No Access

    Article

    Antitumor activity of the diacylated betulin composites with arabinogalactan

    S. A. Kuznetsova, T. P. Shakhtshneider, M. A. Mikhailenko… in Doklady Chemistry (2014)

  10. No Access

    Article

    Different effect of impact and shear mechanical treatment on mechanochemical cocrystallization of piroxicam and succinic acid

    I. A. Tumanov, A. F. Achkasov, S. A. Myz, E. V. Boldyreva… in Doklady Chemistry (2014)

  11. No Access

    Article

    Effect of Mechanochemical Treatment on Physicochemical and Antitumor Properties of Betulin Diacetate Mixtures with Arabinogalactan

    It was shown using gel-permeation chromatography that arabinogalactan in a SPEX 8000 ball mill changed its molecular-weight distribution (MWD) after mechanochemical treatment. The presence of betulin diacetate...

    T. P. Shakhtshneider, S. A. Kuznetsova, M. A. Mikhailenko… in Chemistry of Natural Compounds (2013)

  12. No Access

    Article

    About the possibilities to detect intermediate stages in mechanochemical synthesis of molecular complexes

    We have developed a device to carry out mechanochemical reactions, which allows us to detect the intermediate products during the reaction and to stop mechanical treatment after they have been formed.

    I. A. Tumanov, A. F. Achkasov, E. V. Boldyreva… in Russian Journal of Physical Chemistry A (2012)

  13. No Access

    Article

    Influence of mechanical treatment on the properties of betulin, betulin diacetate, and their mixture with water-soluble polymers

    The influence of mechanical treatment on the properties of betulin, betulin diacetate, and their mixture with water-soluble polymers was studied. It was shown that mechanical treatment in a planetary mill-acti...

    M. A. Mikhailenko, T. P. Shakhtshneider… in Chemistry of Natural Compounds (2011)

  14. No Access

    Article

    A new method for obtaining fine powders of paracetamol for compression without excipients

    A. G. Ogienko, E. V. Boldyreva, A. Yu. Manakov… in Doklady Physical Chemistry (2011)

  15. No Access

    Article

    Homogeneous nucleation from a supersaturated sulfur vapor in a laminar flow diffusion chamber

    S. V. Valiulin, V. V. Karasev, A. A. Onishchuk, S. V. Vosel’… in Doklady Physical Chemistry (2011)

  16. No Access

    Article

    Mechanical activation of α-spodumene for further processing into lithium compounds

    The mechanical activation of α-spodumene in centrifugal planetary apparatuses changed the structure of the mineral and caused the cleavage of the Me-O (Me-Li, Al) bonds. Further treatment with acids and alkali...

    N. P. Kotsupalo, L. T. Menzheres… in Theoretical Foundations of Chemical Engine… (2010)

  17. No Access

    Article

    Modification of the electronic state of indomethacin by mechanical activation

    V. V. Boldyrev, S. P. Gabuda, I. V. Drebushchak… in Doklady Physical Chemistry (2009)

  18. No Access

    Article

    The interaction of the theophylline metastable phase with water vapor

    The conditions of hydration of the stable and metastable theophylline phases were determined. Two-phase metastable phase/monohydrate and stable phase/monohydrate equilibrium pressures were measured at 25, 30, ...

    A. A. Matvienko, V. V. Boldyrev… in Russian Journal of Physical Chemistry A, F… (2008)

  19. No Access

    Article

    Dynamics of mechanochemical synthesis in heterogeneous systems

    The operating conditions for one-stage combustion synthesis and practically important two-stage mechanochemical synthesis, in which a heterogeneous system is pre-activated mostly at the first stage and the syn...

    V. K. Smolyakov, O. V. Lapshin… in Theoretical Foundations of Chemical Engine… (2008)

  20. No Access

    Article

    Mathematical simulation of mechanochemical synthesis in a macroscopic approximation

    Physical theory of mechanochemical synthesis and its mathematical model in a macroscopic approximation are developed. The model is analyzed using analytic methods. The synthesis in a pre-activated system (two-...

    V. K. Smolyakov, O. V. Lapshin… in Theoretical Foundations of Chemical Engine… (2008)

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