Journal Article

FZJ-2014-06819

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Friction in (Im-) Miscible Polymer Brush Systems and the Role of Transverse Polymer Tilting

de Beer, S. (Corresponding Author) ; Müser, M.FZJ*

2014
Soc. Washington, DC

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Please use a persistent id in citations: doi:10.1021/ma501718b

Abstract: It was found recently that two polymer brushes in a tribological contact do not interdigitate when each polymer brush has its own preferred solvent, leading to low friction and low wear rates. Here, we demonstrate, using molecular dynamics simulations, that mutually miscible and fully solvated brush systems do not significantly overlap either if the radii of curvature of the surfaces, to which the brushes are grafted, are sufficiently small. The brushes achieve this by bending away from the center of the contact, while they bend toward the center of the capillary when being only partially solvated. For the fully solvated brushes, immiscible systems also show smaller friction than miscible systems, although the friction reduction is less than for partially solvated brushes.

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)

Research Program(s):

1. 411 - Computational Science and Mathematical Methods (POF2-411) (POF2-411)

Appears in the scientific report 2014

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Database coverage:
; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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