Slip transition of a polymer melt under shear stress
- 18 January 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 70 (3) , 287-290
- https://doi.org/10.1103/physrevlett.70.287
Abstract
We present the first direct measurements of the local velocity of a sheared polymer melt within the first 100 nm from the solid-liquid interface. For high enough shear rates we observe a sharp transition between weak and strong slip (i.e., a nonzero boundary fluid velocity) in the case of weak polymer-surface interactions [polydimethylsiloxane (PDMS) on silanated silica surfaces]. For strong polymer surface interactions the slip is strongly reduced. These results are compared to a theoretical model recently proposed by Brochard and de Gennes.Keywords
This publication has 10 references indexed in Scilit:
- Wall slip of molten high density polyethylenes. II. Capillary rheometer studiesJournal of Rheology, 1992
- Irreversible Adsorption of a Concentrated Polymer SolutionEurophysics Letters, 1992
- Silanation of silica surfaces. A new method of constructing pure or mixed monolayersLangmuir, 1991
- Wall Slip in Viscous Fluids and Influence of Materials of ConstructionJournal of Rheology, 1986
- Depletion layers in polymer solutions : influence of the chain persistence lengthJournal de Physique Lettres, 1985
- The rheological behavior of flexible-chain polymers in the region of high shear rates and stresses, the critical process of spurting, and supercritical conditions of their movement at T > TgRheologica Acta, 1984
- Spatial variation in viscosity in sheared polymer meltsJournal of Materials Science, 1983
- Fringe pattern photobleaching, a new method for the measurement of transport coefficients of biological macromolecules.The EMBO Journal, 1982
- Slip at the Wall and Extrudate Roughness with Aqueous Solutions of Polyvinyl Alcohol and Sodium BorateJournal of Rheology, 1981