2005/02/24 by Xin Zhou, X. Zhou, Denis Andrienko +5
Engineering · Materials Science · Physics and Astronomy · #Adhesion, Friction, and Surface Interactions #Force Microscopy Techniques and Applications #Polymer Surface Interaction Studies #cond-mat.soft
paper · pdf · doi:10.1209/epl/i2004-10478-8
published as Europhys. Lett. 70, p. 264-270, 2005
arxiv created 2005/02/24 · openalex publication_date 2005/03/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
We propose that several mechanisms contribute to friction in a polymer melt adsorbed at a structured surface. The first one is the well-known disentanglement of bulk polymer chains from the surface layer. However, if the surface is ideal at the atomic scale, the adsorbed parts of polymer chains can move along the equipotential lines of the surface potential. This gives rise to a strong slippage of the melt. For high shear rates chains partially desorb. However, the friction force on adsorbed chains increases, resulting in quasi-stick boundary conditions. We propose that the adsorbed layers can be efficiently used to adjust the friction force between the polymer melt and the surface.