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Thermally Switchable Electrically Conductive Thermoset rGO/PK Self-Healing Composites

Among smart materials, self-healing is one of the most studied properties. A self-healing polymer can repair the cracks that occurred in the structure of the material. Polyketones, which are high-performance thermoplastic polymers, are a suitable material for a self-healing mechanism: a furanic pend...

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Autores principales: Araya-Hermosilla, Esteban, Giannetti, Alice, Lima, Guilherme Macedo R., Orozco, Felipe, Picchioni, Francesco, Mattoli, Virgilio, Bose, Ranjita K., Pucci, Andrea
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7865638/
https://www.ncbi.nlm.nih.gov/pubmed/33494537
http://dx.doi.org/10.3390/polym13030339
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author Araya-Hermosilla, Esteban
Giannetti, Alice
Lima, Guilherme Macedo R.
Orozco, Felipe
Picchioni, Francesco
Mattoli, Virgilio
Bose, Ranjita K.
Pucci, Andrea
author_facet Araya-Hermosilla, Esteban
Giannetti, Alice
Lima, Guilherme Macedo R.
Orozco, Felipe
Picchioni, Francesco
Mattoli, Virgilio
Bose, Ranjita K.
Pucci, Andrea
author_sort Araya-Hermosilla, Esteban
collection PubMed
description Among smart materials, self-healing is one of the most studied properties. A self-healing polymer can repair the cracks that occurred in the structure of the material. Polyketones, which are high-performance thermoplastic polymers, are a suitable material for a self-healing mechanism: a furanic pendant moiety can be introduced into the backbone and used as a diene for a temperature reversible Diels-Alder reaction with bismaleimide. The Diels-Alder adduct is formed at around 50 °C and broken at about 120 °C, giving an intrinsic, stimuli-responsive self-healing material triggered by temperature variations. Also, reduced graphene oxide (rGO) is added to the polymer matrix (1.6–7 wt%), giving a reversible OFF-ON electrically conductive polymer network. Remarkably, the electrical conductivity is activated when reaching temperatures higher than 100 °C, thus suggesting applications as electronic switches based on self-healing soft devices.
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spelling pubmed-78656382021-02-07 Thermally Switchable Electrically Conductive Thermoset rGO/PK Self-Healing Composites Araya-Hermosilla, Esteban Giannetti, Alice Lima, Guilherme Macedo R. Orozco, Felipe Picchioni, Francesco Mattoli, Virgilio Bose, Ranjita K. Pucci, Andrea Polymers (Basel) Article Among smart materials, self-healing is one of the most studied properties. A self-healing polymer can repair the cracks that occurred in the structure of the material. Polyketones, which are high-performance thermoplastic polymers, are a suitable material for a self-healing mechanism: a furanic pendant moiety can be introduced into the backbone and used as a diene for a temperature reversible Diels-Alder reaction with bismaleimide. The Diels-Alder adduct is formed at around 50 °C and broken at about 120 °C, giving an intrinsic, stimuli-responsive self-healing material triggered by temperature variations. Also, reduced graphene oxide (rGO) is added to the polymer matrix (1.6–7 wt%), giving a reversible OFF-ON electrically conductive polymer network. Remarkably, the electrical conductivity is activated when reaching temperatures higher than 100 °C, thus suggesting applications as electronic switches based on self-healing soft devices. MDPI 2021-01-21 /pmc/articles/PMC7865638/ /pubmed/33494537 http://dx.doi.org/10.3390/polym13030339 Text en © 2021 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
Araya-Hermosilla, Esteban
Giannetti, Alice
Lima, Guilherme Macedo R.
Orozco, Felipe
Picchioni, Francesco
Mattoli, Virgilio
Bose, Ranjita K.
Pucci, Andrea
Thermally Switchable Electrically Conductive Thermoset rGO/PK Self-Healing Composites
title Thermally Switchable Electrically Conductive Thermoset rGO/PK Self-Healing Composites
title_full Thermally Switchable Electrically Conductive Thermoset rGO/PK Self-Healing Composites
title_fullStr Thermally Switchable Electrically Conductive Thermoset rGO/PK Self-Healing Composites
title_full_unstemmed Thermally Switchable Electrically Conductive Thermoset rGO/PK Self-Healing Composites
title_short Thermally Switchable Electrically Conductive Thermoset rGO/PK Self-Healing Composites
title_sort thermally switchable electrically conductive thermoset rgo/pk self-healing composites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7865638/
https://www.ncbi.nlm.nih.gov/pubmed/33494537
http://dx.doi.org/10.3390/polym13030339
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