TY - JOUR

T1 - Effect of Polydispersity on the Structural and Magnetic Properties of a Magnetopolymer Composite

AU - Radushnov, Dmitry I.

AU - Solovyova, Anna Yu.

AU - Elfimova, Ekaterina A.

N1 - E.A.E. and D.I.R. gratefully acknowledge research funding from Theoretical Physics and Mathematics Advancement Foundation “BASIS” grant number 22-1-2-37-1. The theoretical part of the work was carried out within the framework of these projects. A.Y.S. gratefully acknowledge research funding from the Ministry of Science and Higher Education of the Russian Federation (Ural Federal University project within the Priority 2030 Program). The part of the research related to computer simulation was carried out within the framework of this project.

PY - 2023

Y1 - 2023

N2 - When using magnetopolymer composites in high-precision industrial and biomedical technologies, the problem of predicting their properties in an external magnetic field arises. In this work, we study theoretically the influence of the polydispersity of a magnetic filler on a composite’s equilibrium magnetization and on the orientational texturing of magnetic particles formed during polymerization. The results are obtained using rigorous methods of statistical mechanics and Monte Carlo computer simulations in the framework the bidisperse approximation. It is shown that by adjusting the dispersione composition of the magnetic filler and the intensity of the magnetic field at which the sample’s polymerization occurs, it is possible to control the composite’s structure and magnetization. The derived analytical expressions determine these regularities. The developed theory takes into account dipole–dipole interparticle interactions and therefore can be applied to predict the properties of concentrated composites. The obtained results are a theoretical basis for the synthesis of magnetopolymer composites with a predetermined structure and magnetic properties. © 2023 by the authors.

AB - When using magnetopolymer composites in high-precision industrial and biomedical technologies, the problem of predicting their properties in an external magnetic field arises. In this work, we study theoretically the influence of the polydispersity of a magnetic filler on a composite’s equilibrium magnetization and on the orientational texturing of magnetic particles formed during polymerization. The results are obtained using rigorous methods of statistical mechanics and Monte Carlo computer simulations in the framework the bidisperse approximation. It is shown that by adjusting the dispersione composition of the magnetic filler and the intensity of the magnetic field at which the sample’s polymerization occurs, it is possible to control the composite’s structure and magnetization. The derived analytical expressions determine these regularities. The developed theory takes into account dipole–dipole interparticle interactions and therefore can be applied to predict the properties of concentrated composites. The obtained results are a theoretical basis for the synthesis of magnetopolymer composites with a predetermined structure and magnetic properties. © 2023 by the authors.

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U2 - 10.3390/polym15122678

DO - 10.3390/polym15122678

M3 - Article

VL - 15

JO - Polymers

JF - Polymers

SN - 2073-4360

IS - 12

M1 - 2678

ER -