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Enhanced Electrical and Thermal Conductivities of Polymer Composites with a Segregated Network of Graphene Nanoplatelets

Introducing a segregated network constructed through the selective localization of small amounts of fillers can be a solution to overcome the limitations of the practical use of graphene-based conductive composites due to the high cost of fillers. In this study, polypropylene composites filled with...

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Detalles Bibliográficos
Autores principales: Kim, Ki Hoon, Jang, Ji-Un, Yoo, Gyun Young, Kim, Seong Hun, Oh, Myung Jun, Kim, Seong Yun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10420153/
https://www.ncbi.nlm.nih.gov/pubmed/37570033
http://dx.doi.org/10.3390/ma16155329
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author Kim, Ki Hoon
Jang, Ji-Un
Yoo, Gyun Young
Kim, Seong Hun
Oh, Myung Jun
Kim, Seong Yun
author_facet Kim, Ki Hoon
Jang, Ji-Un
Yoo, Gyun Young
Kim, Seong Hun
Oh, Myung Jun
Kim, Seong Yun
author_sort Kim, Ki Hoon
collection PubMed
description Introducing a segregated network constructed through the selective localization of small amounts of fillers can be a solution to overcome the limitations of the practical use of graphene-based conductive composites due to the high cost of fillers. In this study, polypropylene composites filled with randomly dispersed GNPs and a segregated GNP network were prepared, and their conductive properties were investigated according to the formation of the segregated structure. Due to the GNP clusters induced by the segregated structure, the electrical percolation threshold was 2.9 wt% lower than that of the composite incorporating randomly dispersed GNPs. The fully interconnected GNP cluster network inside the composite contributed to achieving the thermal conductivity of 4.05 W/m∙K at 10 wt% filler content. Therefore, the introduction of a segregated filler network was suitable to simultaneously achieve excellent electrical and thermal conductivities at a low content of GNPs.
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spelling pubmed-104201532023-08-12 Enhanced Electrical and Thermal Conductivities of Polymer Composites with a Segregated Network of Graphene Nanoplatelets Kim, Ki Hoon Jang, Ji-Un Yoo, Gyun Young Kim, Seong Hun Oh, Myung Jun Kim, Seong Yun Materials (Basel) Article Introducing a segregated network constructed through the selective localization of small amounts of fillers can be a solution to overcome the limitations of the practical use of graphene-based conductive composites due to the high cost of fillers. In this study, polypropylene composites filled with randomly dispersed GNPs and a segregated GNP network were prepared, and their conductive properties were investigated according to the formation of the segregated structure. Due to the GNP clusters induced by the segregated structure, the electrical percolation threshold was 2.9 wt% lower than that of the composite incorporating randomly dispersed GNPs. The fully interconnected GNP cluster network inside the composite contributed to achieving the thermal conductivity of 4.05 W/m∙K at 10 wt% filler content. Therefore, the introduction of a segregated filler network was suitable to simultaneously achieve excellent electrical and thermal conductivities at a low content of GNPs. MDPI 2023-07-29 /pmc/articles/PMC10420153/ /pubmed/37570033 http://dx.doi.org/10.3390/ma16155329 Text en © 2023 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
Kim, Ki Hoon
Jang, Ji-Un
Yoo, Gyun Young
Kim, Seong Hun
Oh, Myung Jun
Kim, Seong Yun
Enhanced Electrical and Thermal Conductivities of Polymer Composites with a Segregated Network of Graphene Nanoplatelets
title Enhanced Electrical and Thermal Conductivities of Polymer Composites with a Segregated Network of Graphene Nanoplatelets
title_full Enhanced Electrical and Thermal Conductivities of Polymer Composites with a Segregated Network of Graphene Nanoplatelets
title_fullStr Enhanced Electrical and Thermal Conductivities of Polymer Composites with a Segregated Network of Graphene Nanoplatelets
title_full_unstemmed Enhanced Electrical and Thermal Conductivities of Polymer Composites with a Segregated Network of Graphene Nanoplatelets
title_short Enhanced Electrical and Thermal Conductivities of Polymer Composites with a Segregated Network of Graphene Nanoplatelets
title_sort enhanced electrical and thermal conductivities of polymer composites with a segregated network of graphene nanoplatelets
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10420153/
https://www.ncbi.nlm.nih.gov/pubmed/37570033
http://dx.doi.org/10.3390/ma16155329
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