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The Influence of the Structure of Composites Based on MWCNTs and Polystyrene Matrices on their Dielectric Properties Full article

Journal Physica Status Solidi (B): Basic Research
ISSN: 0370-1972 , E-ISSN: 1521-3951
Output data Year: 2025, Pages: 2400684 Pages count : 6 DOI: 10.1002/pssb.202400684
Tags composites, modeling, multiwall carbon nanotubes, terahertz frequency ranges
Authors Dorofeev Igor O. 1 , Moseenkov Sergey I. 2 , Dorozhkin Kirill V. 1 , Kuznetsov Vladimir L. 2 , Suslyaev Valentin I. 1
Affiliations
1 National Research Tomsk State University, Lenina Avenue 36, Tomsk 634050, Russia
2 Boreskov Institute of Catalysis SB RAS, Lavrentiev Avenue 5, Novosibirsk 630090, Russia

Funding (2)

1 Ministry of Science and Higher Education of the Russian Federation FWUR-2024-0034
2 Ministry of Science and Higher Education of the Russian Federation FSWM-2025-0014

Abstract: The article presents the results of searching for relationships between the distribution type and content of multiwall carbon nanotubes (MWCNTs) in a polymer matrix and the values of permittivity of a composite material. Two types of composites are considered: a) with uniform distribution of MWCNTs in the volume of a polystyrene matrix (PS) and b) with nanotubes distributed in the volume of composites in the form of 3D interconnected cells surrounding PS spheres deformed by compression. It is shown that at mass concentrations of MWCNTs up to 6% and their uniform distribution in the volume of the composite, the Clausius–Mossotti model adequately describes the concentration dependence of the real parts of permittivity. The frequency dependences of the real parts of permittivity have a universal character of a power function with an exponent equal to −0.5 for all materials. The frequency dependences of the imaginary parts of permittivity are also power law. However, the exponent is not universal, as in the case of real parts of permittivity, but varies from −0.5 for composites with a uniform distribution of MWCNTs to −0.8 for composites with a packing of nanotubes on the surface of PS spheres.
Cite: Dorofeev I.O. , Moseenkov S.I. , Dorozhkin K.V. , Kuznetsov V.L. , Suslyaev V.I.
The Influence of the Structure of Composites Based on MWCNTs and Polystyrene Matrices on their Dielectric Properties
Physica Status Solidi (B): Basic Research. 2025. P.2400684. DOI: 10.1002/pssb.202400684 WOS Scopus OpenAlex
Dates:
Submitted: Dec 29, 2024
Accepted: Mar 1, 2025
Published online: Mar 13, 2025
Identifiers:
Web of science: WOS:001443571400001
Scopus: 2-s2.0-86000503407
OpenAlex: W4408388486
Citing: Пока нет цитирований
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