1 research outputs found
Interphase of a Polymer at a Solid Interface
Atomistic
molecular dynamics simulations of a chemically realistic
model of atactic short-chain polystyrene between gold surfaces (111)
and positron annihilation lifetime spectroscopy experiments on similar
polystyrene thin films on gold were performed. Results from both approaches
show that the free volume voids in the film have a slightly smaller
average size than in bulk polystyrene. In agreement to that the existence
of an interphase of higher density at the polymer–solid substrate
interface is shown both by the simulation as well as in the experiment.
The average shape of the voids is similar in the bulk and the film