|Molecular dynamics simulations on the glassy behavior of polymer melts|
|mercredi 26 mai 2004 , 15h00|
|Conférence présentée à l'atelier (2004)|
We present results from molecular-dynamics simulations for a bead-spring model of a polymer melt . We explore the correlation between the structure and the dynamics as the melt is cooled towards its glass transition. We show that two time regimes can be distinguished in the supercooled state: an intermediate time regime in which the amorphous packing between the monomers determines the structural relaxation of the melt, and a late time regime where the relaxation is dominated by chain-connectivity.