TY - JOUR
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.
U2 - 10.3390/polym13030339
DO - 10.3390/polym13030339
M3 - Article
VL - 13
SP - 1
EP - 19
JO - Polymers
JF - Polymers
SN - 2073-4360
IS - 3
M1 - 339
ER -