Sensing adsorption kinetics through slip velocity measurements of polymer melts
Laboratoire de Physique des Solides, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91405, Orsay Cedex, France
2 Univ Lyon, Université Lyon 1, CNRS, Ingénierie des Matériaux Polymères, UMR 5223, F-69003, Lyon, France
Accepted: 26 June 2018
Published online: 9 July 2018
The evolution over time of the nonlinear slip behavior of a polydimethylsiloxane (PDMS) polymer melt on a weakly adsorbing surface made of short non-entangled PDMS chains densely end-grafted to the surface of a fused silica prism has been measured. The critical shear rate at which the melt enters the nonlinear slip regime has been shown to increase with time. The adsorption kinetics of the melt on the same surface has been determined independently using ellipsometry. We show that the evolution of slip can be explained by the slow adsorption of melt chains using the Brochard-de Gennes's model.
Key words: Polymers: From Adsorption to Translocation - Topical Issue in Memoriam Loïc Auvray (1956-2016)
© EDP Sciences, SIF, Springer-Verlag GmbH Germany, part of Springer Nature, 2018