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RESEARCH PRODUCT
Frictional Drag Mechanisms between Polymer-Bearing Surfaces
Jacob KleinMartin H. MüserT. KreerAnd K. Bindersubject
chemistry.chemical_classificationQuantitative Biology::BiomoleculesShear thinningMaterials scienceSurfaces and InterfacesPolymerCondensed Matter PhysicsThermostatlaw.inventionCondensed Matter::Soft Condensed MatterMolecular dynamicsClassical mechanicsShear (geology)chemistryDraglawElectrochemistryRadius of gyrationGeneral Materials ScienceComposite materialSpectroscopydescription
The fundamental features of friction between two polymer-bearing surfaces in relative sliding motion are investigated by molecular dynamics simulation. Adsorbed and grafted polymers are considered in good and bad solutions. The solvent is not treated explicitly but indirectly in terms of a Langevin thermostat. In both systems, we observe shear thinning that is attributed to an orientation of the radius of gyration along the sliding direction. This effect is particularly strong for surfaces bearing polymer brushes. In this case, the shear stresses are mainly determined by the degree of the interpenetration of brushes.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2001-11-07 | Langmuir |