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  Adsorption-induced slip inhibition for polymer melts on ideal substrates

Ilton, M., Salez, T., Fowler, P. D., Rivetti, M., Aly, M., Benzaquen, M., et al. (2018). Adsorption-induced slip inhibition for polymer melts on ideal substrates. Nature Communications, 9: 1172. doi:10.1038/s41467-018-03610-4.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0000-F739-A Version Permalink: http://hdl.handle.net/21.11116/0000-0001-18C6-5
Genre: Journal Article

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 Creators:
Ilton, M., Author
Salez, T., Author
Fowler, Paul D.1, Author              
Rivetti, Marco1, Author              
Aly, M., Author
Benzaquen, M., Author
McGraw, J. D., Author
Raphaël, E., Author
Dalnoki-Veress, K., Author
Bäumchen, Oliver1, Author              
Affiliations:
1Group Dynamics of fluid and biological interfaces, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063300              

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 Abstract: Hydrodynamic slip, the motion of a liquid along a solid surface, represents a fundamental phenomenon in fluid dynamics that governs liquid transport at small scales. For polymeric liquids, de Gennes predicted that the Navier boundary condition together with polymer reptation implies extraordinarily large interfacial slip for entangled polymer melts on ideal surfaces; this Navier-de Gennes model was confirmed using dewetting experiments on ultra-smooth, low-energy substrates. Here, we use capillary leveling-surface tension driven flow of films with initially non-uniform thickness-of polymeric films on these same substrates. Measurement of the slip length from a robust one parameter fit to a lubrication model is achieved. We show that at the low shear rates involved in leveling experiments as compared to dewetting ones, the employed substrates can no longer be considered ideal. The data is instead consistent with a model that includes physical adsorption of polymer chains at the solid/liquid interface.

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Language(s): eng - English
 Dates: 2018-03-212018
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1038/s41467-018-03610-4
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Title: Nature Communications
Source Genre: Journal
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Pages: 7 Volume / Issue: 9 Sequence Number: 1172 Start / End Page: - Identifier: -