INTEMA 05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Shape Memory Polymers Based on an Epoxy Network Cured with a Mixture of Amines
Autor/es:
AGUSTINA B. LEONARDI; ILEANA A. ZUCCHI; EZEQUIEL R. SOULÉ; CRISTINA E. HOPPE; LAURA A. FASCE; ROBERTO J. J. WILLIAMS
Lugar:
Bariloche
Reunión:
Encuentro; X encuentro nanoCNEA; 2010
Resumen:
SHAPE MEMORY POLYMERS BASED ON AN EPOXY NETWORK CURED WITH A MIXTURE OF
AMINES A new Shape Memory Polymer was synthetized, crosslinking a
di-epoxy monomer based on diglycidyl ether of bisphenol A (DGEBA) with a
mixture of bi-functional dodecilamine (DA) and tetra-functional
Meta-xylylene-diamine (MXDA). The Tg of the material can be varied from
15 to 120ºC, by modifying the relative amounts of DA and MXDA. Good
shape recovery after repretitive cycles of
heating-deformation-cooling-recovery was attained. It was also observed
that an annealing process above Tg for several days lead to an increase
of Tg and modulus. This is explained considering that DA chains undergo
nanostructuration, acting as physical crosslinks. The effects of
nanostructuration are currently being quantified by reology and
mechanical testing.
