The Influence of the Structure of Composites Based on MWCNTs and Polystyrene Matrices on their Dielectric Properties | Sciact - CRIS-система Института катализа

The Influence of the Structure of Composites Based on MWCNTs and Polystyrene Matrices on their Dielectric Properties Научная публикация

Журнал

Physica Status Solidi (B): Basic Research
ISSN: 0370-1972 , E-ISSN: 1521-3951

Вых. Данные

Год: 2025, Страницы: 2400684 Страниц : 6 DOI: 10.1002/pssb.202400684

Ключевые слова

composites, modeling, multiwall carbon nanotubes, terahertz frequency ranges

Авторы

Dorofeev Igor O. ¹ , Moseenkov Sergey I. ² , Dorozhkin Kirill V. ¹ , Kuznetsov Vladimir L. ² , Suslyaev Valentin I. ¹

Организации

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

Информация о финансировании (2)

1	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)	FWUR-2024-0034
2	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)	FSWM-2025-0014

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.

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

Поступила в редакцию:	29 дек. 2024 г.
Принята к публикации:	1 мар. 2025 г.
Опубликована online:	13 мар. 2025 г.

Web of science:	WOS:001443571400001
Scopus:	2-s2.0-86000503407
OpenAlex:	W4408388486

Пока нет цитирований