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High Permittivity Polymer Composites on the Basis of Long Single-Walled Carbon Nanotubes: The Role of the Nanotube Length

Controlling the permittivity of dielectric composites is critical for numerous applications dealing with matter/electromagnetic radiation interaction. In this study, we have prepared polymer composites, based on a silicone elastomer matrix and Tuball carbon nanotubes (CNT) via a simple preparation p...

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Autores principales: Galyaltdinov, Shamil, Lounev, Ivan, Khamidullin, Timur, Hashemi, Seyyed Alireza, Nasibulin, Albert, Dimiev, Ayrat M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9565907/
https://www.ncbi.nlm.nih.gov/pubmed/36234671
http://dx.doi.org/10.3390/nano12193538
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author Galyaltdinov, Shamil
Lounev, Ivan
Khamidullin, Timur
Hashemi, Seyyed Alireza
Nasibulin, Albert
Dimiev, Ayrat M.
author_facet Galyaltdinov, Shamil
Lounev, Ivan
Khamidullin, Timur
Hashemi, Seyyed Alireza
Nasibulin, Albert
Dimiev, Ayrat M.
author_sort Galyaltdinov, Shamil
collection PubMed
description Controlling the permittivity of dielectric composites is critical for numerous applications dealing with matter/electromagnetic radiation interaction. In this study, we have prepared polymer composites, based on a silicone elastomer matrix and Tuball carbon nanotubes (CNT) via a simple preparation procedure. The as-prepared composites demonstrated record-high dielectric permittivity both in the low-frequency range (10(2)–10(7) Hz) and in the X-band (8.2–12.4 GHz), significantly exceeding the literature data for such types of composite materials at similar CNT content. Thus, with the 2 wt% filler loading, the permittivity values reach 360 at 10(6) Hz and >26 in the entire X-band. In similar literature, even the use of conductive polymer hosts and various highly conductive additives had not resulted in such high permittivity values. We attribute this phenomenon to specific structural features of the used Tuball nanotubes, namely their length and ability to form in the polymer matrix percolating network in the form of neuron-shaped clusters. The low cost and large production volumes of Tuball nanotubes, as well as the ease of the composite preparation procedure open the doors for production of cost-efficient, low weight and flexible composites with superior high permittivity.
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spelling pubmed-95659072022-10-15 High Permittivity Polymer Composites on the Basis of Long Single-Walled Carbon Nanotubes: The Role of the Nanotube Length Galyaltdinov, Shamil Lounev, Ivan Khamidullin, Timur Hashemi, Seyyed Alireza Nasibulin, Albert Dimiev, Ayrat M. Nanomaterials (Basel) Article Controlling the permittivity of dielectric composites is critical for numerous applications dealing with matter/electromagnetic radiation interaction. In this study, we have prepared polymer composites, based on a silicone elastomer matrix and Tuball carbon nanotubes (CNT) via a simple preparation procedure. The as-prepared composites demonstrated record-high dielectric permittivity both in the low-frequency range (10(2)–10(7) Hz) and in the X-band (8.2–12.4 GHz), significantly exceeding the literature data for such types of composite materials at similar CNT content. Thus, with the 2 wt% filler loading, the permittivity values reach 360 at 10(6) Hz and >26 in the entire X-band. In similar literature, even the use of conductive polymer hosts and various highly conductive additives had not resulted in such high permittivity values. We attribute this phenomenon to specific structural features of the used Tuball nanotubes, namely their length and ability to form in the polymer matrix percolating network in the form of neuron-shaped clusters. The low cost and large production volumes of Tuball nanotubes, as well as the ease of the composite preparation procedure open the doors for production of cost-efficient, low weight and flexible composites with superior high permittivity. MDPI 2022-10-10 /pmc/articles/PMC9565907/ /pubmed/36234671 http://dx.doi.org/10.3390/nano12193538 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Galyaltdinov, Shamil
Lounev, Ivan
Khamidullin, Timur
Hashemi, Seyyed Alireza
Nasibulin, Albert
Dimiev, Ayrat M.
High Permittivity Polymer Composites on the Basis of Long Single-Walled Carbon Nanotubes: The Role of the Nanotube Length
title High Permittivity Polymer Composites on the Basis of Long Single-Walled Carbon Nanotubes: The Role of the Nanotube Length
title_full High Permittivity Polymer Composites on the Basis of Long Single-Walled Carbon Nanotubes: The Role of the Nanotube Length
title_fullStr High Permittivity Polymer Composites on the Basis of Long Single-Walled Carbon Nanotubes: The Role of the Nanotube Length
title_full_unstemmed High Permittivity Polymer Composites on the Basis of Long Single-Walled Carbon Nanotubes: The Role of the Nanotube Length
title_short High Permittivity Polymer Composites on the Basis of Long Single-Walled Carbon Nanotubes: The Role of the Nanotube Length
title_sort high permittivity polymer composites on the basis of long single-walled carbon nanotubes: the role of the nanotube length
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9565907/
https://www.ncbi.nlm.nih.gov/pubmed/36234671
http://dx.doi.org/10.3390/nano12193538
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