INTEMA   05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Self-healing of bio-based polymer networks with remote triggering through photothermal effect
Autor/es:
ANTONACCI, J.; HOPPE, C.E.; ALTUNA, F.I.; ARENAS, G. F.; PETTARIN, V. I.; WILLIAMS, R.J.J.
Lugar:
Buenos Aires
Reunión:
Simposio; Frontiers in Physical Sciences; 2016
Institución organizadora:
ICAS-UNSAM, Max Planck Gesellschaft, Alexander von Humboldt Foundation
Resumen:
Research on self-healable thermosetting polymers based on dynamiccovalent bonds are an attractive research field that is undergoing asteadly grouth A bio-based polymer matrix, obtained by crosslinkingof epoxidised soybean oil (ESO) with an aqueous citric acid (CA)solution, was self-healed through molecular rearrangements producedby transesterification reactions of β-hydroxyester groups generatedin the polymerization reaction.The temperature increase required for the triggering of thesethermally-activated reactions was attained by green light irradiationof the damaged area. Compression force needed to assure a goodcontact between crack faces was achieved by volume dilatationgenerated by the same temperature rise. Gold NPs dispersed in thepolymer efficiently generated heat in the presence of electromagneticradiation under plasmon resonance, acting as nanometric heatingsources and allowing remote activation of the self-healing in thecrosslinked polymer.