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Self-Sensing Nanocomposites for Structural Applications: Choice Criteria

Epoxy resins containing multi-wall carbon nanotubes (MWCNTs) have proven to be suitable for manufacturing promising self-sensing materials to be applied in the automotive and aeronautic sectors. Different parameters concerning morphological and mechanical properties of the hosting matrices have been...

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Autores principales: Guadagno, Liberata, Lamberti, Patrizia, Tucci, Vincenzo, Vertuccio, Luigi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8064094/
https://www.ncbi.nlm.nih.gov/pubmed/33805087
http://dx.doi.org/10.3390/nano11040833
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author Guadagno, Liberata
Lamberti, Patrizia
Tucci, Vincenzo
Vertuccio, Luigi
author_facet Guadagno, Liberata
Lamberti, Patrizia
Tucci, Vincenzo
Vertuccio, Luigi
author_sort Guadagno, Liberata
collection PubMed
description Epoxy resins containing multi-wall carbon nanotubes (MWCNTs) have proven to be suitable for manufacturing promising self-sensing materials to be applied in the automotive and aeronautic sectors. Different parameters concerning morphological and mechanical properties of the hosting matrices have been analyzed to choose the most suitable system for targeted applications. Two different epoxy precursors, the tetrafunctional tetraglycidyl methylene dianiline (TGMDA) and the bifunctional bisphenol A diglycidyl ether (DGEBA) have been considered. Both precursors have been hardened using the same hardener in stoichiometric conditions. The different functionality of the precursor strongly affects the crosslinking density and, as a direct consequence, the electrical and mechanical behavior. The properties exhibited by the two different formulations can be taken into account in order to make the most appropriate choice with respect to the sensing performance. For practical applications, the choice of one formulation rather than another can be performed on the basis of costs, sensitivity, processing conditions, and most of all, mechanical requirements and in-service conditions of the final product. The performed characterization shows that the nanocomposite based on the TGMDA precursor manifests better performance in applications where high values in the glass transition temperature and storage modulus are required.
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spelling pubmed-80640942021-04-24 Self-Sensing Nanocomposites for Structural Applications: Choice Criteria Guadagno, Liberata Lamberti, Patrizia Tucci, Vincenzo Vertuccio, Luigi Nanomaterials (Basel) Article Epoxy resins containing multi-wall carbon nanotubes (MWCNTs) have proven to be suitable for manufacturing promising self-sensing materials to be applied in the automotive and aeronautic sectors. Different parameters concerning morphological and mechanical properties of the hosting matrices have been analyzed to choose the most suitable system for targeted applications. Two different epoxy precursors, the tetrafunctional tetraglycidyl methylene dianiline (TGMDA) and the bifunctional bisphenol A diglycidyl ether (DGEBA) have been considered. Both precursors have been hardened using the same hardener in stoichiometric conditions. The different functionality of the precursor strongly affects the crosslinking density and, as a direct consequence, the electrical and mechanical behavior. The properties exhibited by the two different formulations can be taken into account in order to make the most appropriate choice with respect to the sensing performance. For practical applications, the choice of one formulation rather than another can be performed on the basis of costs, sensitivity, processing conditions, and most of all, mechanical requirements and in-service conditions of the final product. The performed characterization shows that the nanocomposite based on the TGMDA precursor manifests better performance in applications where high values in the glass transition temperature and storage modulus are required. MDPI 2021-03-24 /pmc/articles/PMC8064094/ /pubmed/33805087 http://dx.doi.org/10.3390/nano11040833 Text en © 2021 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 (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ).
spellingShingle Article
Guadagno, Liberata
Lamberti, Patrizia
Tucci, Vincenzo
Vertuccio, Luigi
Self-Sensing Nanocomposites for Structural Applications: Choice Criteria
title Self-Sensing Nanocomposites for Structural Applications: Choice Criteria
title_full Self-Sensing Nanocomposites for Structural Applications: Choice Criteria
title_fullStr Self-Sensing Nanocomposites for Structural Applications: Choice Criteria
title_full_unstemmed Self-Sensing Nanocomposites for Structural Applications: Choice Criteria
title_short Self-Sensing Nanocomposites for Structural Applications: Choice Criteria
title_sort self-sensing nanocomposites for structural applications: choice criteria
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8064094/
https://www.ncbi.nlm.nih.gov/pubmed/33805087
http://dx.doi.org/10.3390/nano11040833
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