Viscoelasticity induced onset of slip at the wall for polymer fluids
arXiv:2002.03429 · doi:10.1021/acsmacrolett.0c00182
Abstract
The progressive onset of slip at the wall, which corresponds to a slip length increasing with the solicitation time before reaching a plateau, has been investigated for model viscoelastic polymer solutions, allowing one to vary the longest relaxation time while keeping constant solid - fluid interactions. A hydrodynamic model based on a Maxwell fluid and the classical Navier's hypothesis of a linear response for the friction stress at the interface fully accounts for the data, without any adjustable parameter. No viscoelastic response needs be postulated for the friction, reflecting the local character of solid-liquid friction mechanisms.
arXiv comment6 pages, 4 figures. Published
References in corpus (6)
- Tuneable Sieving of Ions Using Graphene Oxide Membranes
- Molecular transport through capillaries made with atomic-scale precision
- Giant amplification of interfacially driven transport by hydrodynamic slip: diffusio-osmosis and beyond
- Wall slip of complex fluids: interfacial friction or slip length?
- Friction of polymers: from PDMS melts to PDMS elastomers
- Adsorption-Induced Slip Inhibition for Polymer Melts on Ideal Substrates