Slow process in confined polymer melts: layer exchange dynamics at a polymer solid interface.

@article{Yelash2010SlowPI,
  title={Slow process in confined polymer melts: layer exchange dynamics at a polymer solid interface.},
  author={Leonid Yelash and Peter Virnau and K. Binder and Wolfgang Paul},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  year={2010},
  volume={82 5 Pt 1},
  pages={
          050801
        }
}
Employing Molecular Dynamics simulations of a chemically realistic model of 1,4-polybutadiene between graphite walls we show that the mass exchange between layers close to the walls is a slow process already in the melt state. For the glass transition of confined polymers this process competes with the slowing down due to packing effects and intramolecular rotation barriers.