Dewetting of thin polymer films.
We study the dewetting of thin polymer films deposited on slippery substrate. Recent experiments on these systems have revealed many unexpected features. We develop here a model that takes into account the rheological properties of polymer melts, focussing on two dewetting geometries (the receding of a straight edge, and the opening of a hole). We show that the friction law associated with the slippage between the film and the substrate has a direct influence on the dewetting dynamic. In addition, we demonstrate that residual stresses, which can be stored in the films due to their viscoelasticity, are a source of destabilization for polymer films, and accelerate the dewetting process.
Vilmin
T
T
Laboratoire de Physico-Chimie Théorique, UMR CNRS 7083, ESPCI, 10 rue Vauquelin, 75231, Paris Cedex 05, France. thomas.vilmin@gmail.com
Raphaël
E
E
D000327:Adsorption; D000465:Algorithms; D004548:Elasticity; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D012212:Rheology; D013314:Stress, Mechanical; D014783:Viscosity; D017155:Wettability
D011108:Polymers