IFIR 05409
INSTITUTO DE FISICA DE ROSARIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Chain molecular flow in EPDM aged in different conditions
Autor/es:
O. A. LAMBRI; F. PLAZAOLA; F. TARDITTI; C. E. BOSCHETTI; D. MÉRIDA; G. I. ZELADA; J. A. GARCÍA; J. A. CANO; F. A. SÁNCHEZ
Lugar:
Foz del Iguazú
Reunión:
Congreso; Décimo Quinto Encuentro Regional Iberoamericano del CIGRE (Consejo Internacional de Grandes Redes Eléctricas), XV ERIAC; 2013
Institución organizadora:
CIGRE (Consejo Internacional de Grandes Redes Eléctricas) Brasil
Resumen:
In this work we show a general viscoelastic procedure for determining the activation energy involved in the movement of the polymer chains owing to the melting of the crystalline zones in crystalline polymers. The procedure was applied to dynamic mechanical analysis studies performed in neutron irradiated EPDM where crystalline zones are developed by means of chemi-crystallisation. The obtained results of the activation energy were also correlated with the free volume of the samples determined from positron annihilation lifetime spectroscopy.
