Figure 1.

Molecular dynamics simulations of the quenching at temperature T of a melt of $N={10}^3$ linear polymer chains with $M=20$ monomers each. Along the chain, nearest-neighbor monomers interact via a harmonic potential, and the remaining intra- and inter-chain monomers interact via a Lennard–Jones potential. Here, $T\simeq (1/4)T_g$ of the glass transition temperature $T_g$, and time increases from left to right (1, ${10}^2$, ${10}^4$) a.u. (adapted from [13]).