Coarse-grained molecular dynamics simulations of polymer melts in transient and steady shear flow

A coarse-grained simulation model was used to investigate the transient and steady-state nonlinear flow properties of unentangled and moderately entangled polyethylene melts. It was found that the model's predictions agree very well with various rheological experiments for shearing flow. This enabled to test the stress-optical rule and it was observed that it was valid, but only for low and moderate shear rates