Relaxation Dynamics of Thin Matrimid 5218 Films in Organic Solvents.

Polyimides are interesting polymer materials for organic solvent nanofiltration (OSN) applications because of their high excess free volume and high chemical and temperature resistance. However, an open challenge that remains for glassy polymer materials (i.e.

Evidence of a Transition Layer between the Free Surface and the Bulk.

The free surface, a very thin layer at the interface between polymer and air, is considered the main source of the perturbations in the properties of ultrathin polymer films, i.e., nanoconfinement effects.