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Development of Reinforced Polyester/Graphene Nanocomposite Showing Tailored Electrical Conductivity
Production process was chosen in order to be readily scalable at the industrial level. The resin/graphene mixture was prepared through high shear mixing at six different weight concentrations between 0% and 10%. Samples were subsequently produced by compression molding. The electrical properties wer...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7602174/ https://www.ncbi.nlm.nih.gov/pubmed/33066586 http://dx.doi.org/10.3390/polym12102358 |
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author | Serenari, Federico Madinehei, Milad Moghimian, Nima Fabiani, Davide David, Eric |
author_facet | Serenari, Federico Madinehei, Milad Moghimian, Nima Fabiani, Davide David, Eric |
author_sort | Serenari, Federico |
collection | PubMed |
description | Production process was chosen in order to be readily scalable at the industrial level. The resin/graphene mixture was prepared through high shear mixing at six different weight concentrations between 0% and 10%. Samples were subsequently produced by compression molding. The electrical properties were measured both in-the-plane and across-the-plane using, respectively, a four-point probe and a two-electrode system. The two-electrode system was a dielectric spectrometer, and accordingly, the across-the-plane measurements were conducted in the frequency-domain. Mechanical measurements were conducted using conventional three-point bending and impact setups. The percolation threshold was found to be in the range of 3–5 wt.% concentration, for which the conductivity showed a 7 orders of magnitude increase. These results were quite similar to the samples containing around 50 wt.% of glass fibers. Surprisingly, the in-the-plane conductivity was found to be lower than the bulk conductivity, contrary to what was found with the same filler for thermoplastic composites prepared by melt compounding. No significant increase in mechanical properties as a function of filler loading was observed, except maybe a slight increase in the material toughness. |
format | Online Article Text |
id | pubmed-7602174 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-76021742020-11-01 Development of Reinforced Polyester/Graphene Nanocomposite Showing Tailored Electrical Conductivity Serenari, Federico Madinehei, Milad Moghimian, Nima Fabiani, Davide David, Eric Polymers (Basel) Article Production process was chosen in order to be readily scalable at the industrial level. The resin/graphene mixture was prepared through high shear mixing at six different weight concentrations between 0% and 10%. Samples were subsequently produced by compression molding. The electrical properties were measured both in-the-plane and across-the-plane using, respectively, a four-point probe and a two-electrode system. The two-electrode system was a dielectric spectrometer, and accordingly, the across-the-plane measurements were conducted in the frequency-domain. Mechanical measurements were conducted using conventional three-point bending and impact setups. The percolation threshold was found to be in the range of 3–5 wt.% concentration, for which the conductivity showed a 7 orders of magnitude increase. These results were quite similar to the samples containing around 50 wt.% of glass fibers. Surprisingly, the in-the-plane conductivity was found to be lower than the bulk conductivity, contrary to what was found with the same filler for thermoplastic composites prepared by melt compounding. No significant increase in mechanical properties as a function of filler loading was observed, except maybe a slight increase in the material toughness. MDPI 2020-10-14 /pmc/articles/PMC7602174/ /pubmed/33066586 http://dx.doi.org/10.3390/polym12102358 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Serenari, Federico Madinehei, Milad Moghimian, Nima Fabiani, Davide David, Eric Development of Reinforced Polyester/Graphene Nanocomposite Showing Tailored Electrical Conductivity |
title | Development of Reinforced Polyester/Graphene Nanocomposite Showing Tailored Electrical Conductivity |
title_full | Development of Reinforced Polyester/Graphene Nanocomposite Showing Tailored Electrical Conductivity |
title_fullStr | Development of Reinforced Polyester/Graphene Nanocomposite Showing Tailored Electrical Conductivity |
title_full_unstemmed | Development of Reinforced Polyester/Graphene Nanocomposite Showing Tailored Electrical Conductivity |
title_short | Development of Reinforced Polyester/Graphene Nanocomposite Showing Tailored Electrical Conductivity |
title_sort | development of reinforced polyester/graphene nanocomposite showing tailored electrical conductivity |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7602174/ https://www.ncbi.nlm.nih.gov/pubmed/33066586 http://dx.doi.org/10.3390/polym12102358 |
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