title: Slow process in confined polymer melts: layer exchange dynamics at a polymer solid interface.
abstract: 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.
authors.affiliation: Institute of Physics, Johannes-Gutenberg-University, 55099 Mainz, Germany.
authors.forename: L
authors.initials: L
authors.lastname: Yelash
authors.forename: P
authors.initials: P
authors.lastname: Virnau
authors.forename: K
authors.initials: K
authors.lastname: Binder
authors.forename: W
authors.initials: W
authors.lastname: Paul