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Action of Mechanical Forces on Polymerization and Polymers

“…The purpose of applied research was the development of technologies for the mechanochemical processing of natural polymer raw materials into products in demand on the market. To achieve these goals, the following important tasks are under implementation: Study of physico-chemical processes occurring in natural polymers, their supramolecular complexes and biological materials during mechanochemical processing in laboratory and industrial conditions [ 23 ]; Obtaining information about the influence of the chemical composition, surface properties, crystal and supramolecular structures of carbohydrate, protein and polyphenolic polymers on their reactivity in heterogeneous reactions, which follow mechanochemical processing [ 24 ]; Finding the conditions of mechanochemical processing of protein macromolecules, to ensure the stability of proteins and leading to the formation of reactive composites with carbohydrate polymers and vegetable raw materials in general [ 25 ]; Investigation into the behavior of nanocomposites and micro-composites based on polystyrene under conditions of rapid compression and identification of the role of mechanical action in the combined thermomechanical process [ 26 ]; Carrying out the mathematical modeling of vibration effects on the kinetics of solid-phase decomposition reactions in condensed media to develop models of the mechanism and reveal the role of mechanical action in the combined mechanochemical process [ 27 ]; Propose a mechanism revealing the role of mechanical action in the overall mechanochemical process, including mechanochromism [ 1 , 28 , 29 , 30 , 31 , 32 ]; Systematization of macroscopic manifestations of polymer mechanochemistry and evaluation of results in the framework of physical chemistry [ 5 ]. …”

“…Carrying out the mathematical modeling of vibration effects on the kinetics of solid-phase decomposition reactions in condensed media to develop models of the mechanism and reveal the role of mechanical action in the combined mechanochemical process [ 27 ];…”

“…This result led the authors to the conclusion that after the rupture of the stretched chain, no thermal fluctuations occur and high-energy molecular products are formed at the initial stage of destruction of the polymer chain in the time interval of 0.01−1 ps after its first rupture. Analyzing and comparing the results with experimental data, Shlenskii [ 27 ] pointed out the need to take into account the possible conversion of a part of the elastic energy stored during the stretching of the macromolecule into electronic excitation energy under significant deformations of the macromolecule both at the stage of its stretching and after rupture at the stage of intense molecular dynamics. In accordance with Zarkhin et al [ 69 ], we point out that the experimental results and computer simulation of mechanical destruction indicate that there may be a specific mechanism of solid-phase reactions associated with the cooperative movement of atoms.…”

Throttling device for deep cracking of heavy petroleum products

“…The possibility of completing the pyrolysis of petroleum products in the throttling device is therefore confirmed theoretically and experimentally in [9,10]. Moreover, it was established by the method of contact thermal analysis as a result of rapid heating, and shortening of the reaction time for thermal decomposition of the specimens under laboratory conditions that the output of gaseous products of gas-oil pyrolysis, which is obtained as a result of catalytic cracking, is increased by 8%.…”