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

Esteban Araya-Hermosilla; Alice Giannetti; Guilherme de Macedo R. Lima; Felipe Orozco; Francesco Picchioni; Virgilio Mattoli; Ranjita K. Bose; Andrea Pucci

doi:10.3390/polym13030339

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

Esteban Araya-Hermosilla, Alice Giannetti, Guilherme de Macedo R. Lima, Felipe Orozco , Francesco Picchioni, Virgilio Mattoli, Ranjita K. Bose^*, Andrea Pucci^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

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.

Original language	English
Article number	339
Pages (from-to)	1-19
Number of pages	17
Journal	Polymers
Volume	13
Issue number	3
DOIs	https://doi.org/10.3390/polym13030339
Publication status	Published - 21-Jan-2021

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title = "Thermally Switchable Electrically Conductive Thermoset rGO/PK Self-Healing Composites",

abstract = "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.",

author = "Esteban Araya-Hermosilla and Alice Giannetti and {de Macedo R. Lima}, Guilherme and Felipe Orozco and Francesco Picchioni and Virgilio Mattoli and Bose, {Ranjita K.} and Andrea Pucci",

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T1 - Thermally Switchable Electrically Conductive Thermoset rGO/PK Self-Healing Composites

AU - Araya-Hermosilla, Esteban

AU - Giannetti, Alice

AU - de Macedo R. Lima, Guilherme

AU - Orozco , Felipe

AU - Picchioni, Francesco

AU - Mattoli, Virgilio

AU - Bose, Ranjita K.

AU - Pucci, Andrea

PY - 2021/1/21

Y1 - 2021/1/21

N2 - 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.

AB - 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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