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Shear deformation of low-density polymer brushes in a good solvent
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- Korolkovas, Airidas (author)
- Uppsala universitet,Materialfysik,Inst Laue Langevin, 71 Rue Martyrs, F-38000 Grenoble, France
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- Gutfreund, Philipp (author)
- Inst Laue Langevin, 71 Rue Martyrs, F-38000 Grenoble, France
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- Chenneviere, Alexis (author)
- Univ Paris Sud, Lab Phys Solides, CNRS, F-91405 Orsay, France
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- AMER PHYSICAL SOC, 2018
- 2018
- English.
- In: Physical review. E. - : AMER PHYSICAL SOC. - 2470-0045 .- 2470-0053. ; 98:3
- Journal article (peer-reviewed)
Abstract
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- Self-consistent field approach is used to model a single end-tethered polymer chain on a substrate subject to various forces in three dimensions. Starting from a continuous Gaussian chain model, the following perturbations are considered: (i) hydrodynamic interaction with an externally imposed shear flow for which an alternative theoretical framework is formulated; (ii) excluded volume effect in a good solvent, treated in a mean field approximation; (iii) monomer-substrate repulsion. While the chain stretches along the flow, the change of the density profile perpendicular to the substrate is negligible for any reasonable simulation parameters. This null effect is in agreement with multiple neutron scattering studies.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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