Sliding Friction with Polymer Brushes
Abstract
Using high-resolution shear force measurements, we examine in detail the frictional drag between rubbing surfaces bearing end-tethered polymeric surfactants (brushes). The drag attains a maximum on initial motion, attributed to elastic stretching of the chains, which falls by a cascade of relaxations to a value characteristic of kinetic friction. This has a very weak velocity dependence, attributed to chain moieties dragging within a self-regulating, mutual interpenetration zone. When sliding stops, the shear stress across the polymer layers decays logarithmically with time, consistent with the relaxation of a network of dangling ends.
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Frictional dissipation takes place across the sheared interpenetration zone rather than at a sharp interface as between solid surfaces.
“Since frictional dissipation takes place across the sheared interpenetration zone [29] rather than at a sharp interface as between solid surfaces, the hydration layers reduce the friction between the compressed monomers as they slide past each other, via the hydration lubrication mechanism.”
From Hydration lubrication (2013) · cites this paper as [29]
Cites
Stress relaxation in the lamellar copolymer mesophase
Witten, T. A., Leibler, L., & Pincus, P. A. (1990) · Macromolecules · doi:10.1021/ma00205a022 · Cited by 202 · see citing works
Rheology of star polymers in concentrated solutions and melts
Doi, M., & Kuzuu, N. Y. (1980) · Journal of Polymer Science: Polymer Letters Edition · doi:10.1002/pol.1980.130181205 · Cited by 170 · see citing works
Wijmans, C. M., Zhulina, E. B., & Fleer, G. J. (1994) · Macromolecules · doi:10.1021/ma00090a017 · Cited by 135 · see citing works
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Lubrication at physiological pressures by polyzwitterionic brushes
Chen, M., Briscoe, W. H., Armes, S. P., & Klein, J. (2009) · Science · doi:10.1126/science.1169399 · Cited by 704 · see citing works
Self-citationKlein, J. (2013) · Friction · doi:10.1007/s40544-013-0001-7 · Cited by 567 · see citing works
Self-citationNormal and Frictional Forces between Surfaces Bearing Polyelectrolyte Brushes
Raviv, U., Giasson, S., Kampf, N., Gohy, J.-F., Jérôme, R., & Klein, J. (2008) · Langmuir · doi:10.1021/la7039724 · Cited by 106 · see citing works
Self-citation
- Authors
- Tadmor, R., Janik, J., Klein, J., & Fetters, L. J.
- Affiliations
- University of Oxford (GB)
- ExxonMobil (United States) (US)
- Corresponding author
- Klein, Jacob
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2003-09-09
- Volume
- 91
- Issue
- 11
- Pages
- 115503-115503
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1986209820
- Cited by
- 137
- References
- 3
- Citations by year
- 2025: 6 · 2024: 4 · 2023: 3 · 2022: 3 · 2021: 3 · 2020: 6 · 2019: 7 · 2018: 8 · 2017: 9 · 2016: 5 · 2015: 3 · 2014: 6 · 2013: 8 · 2012: 13
- FWCI
- 2.32
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Force Microscopy Techniques and Applications
- Physical Sciences › Engineering › Mechanics of Materials › Adhesion, Friction, and Surface Interactions
- Physical Sciences › Materials Science › Surfaces, Coatings and Films › Polymer Surface Interaction Studies
- Keywords
- sliding friction, polymer brushes, skin friction, chain stretching, velocity dependence, shear relaxation
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