Figure 4

Steady state viscosity η _E, squared reduced stretch λ ², polymer anisotropy S, FENE factor f _FENE, entanglement segment number per chain Z, and reduced friction \( \zeta /\zeta (0) \) for Blend1 (from top to bottom) plotted against strain rate \( \dot{\varepsilon } \). Solid and dotted red curves are for long and short chains. Black curve and horizontal dotted line in the top panel are the total viscosity and the Trouton’s viscosity, respectively. Dot dashed vertical lines indicate the borders between different regions (see text for detail). The reciprocal of the longest relaxation time τ ₁, the (viscoelastic) Rouse relaxation times of the long and short chains, τ _RL and τ _RS, are also indicated at the horizontal axis.