Friction between ring polymer brushes

Soft Matter
Aykut Erbaş, Jarosław Paturej

Abstract

Friction between ring polymer brush bilayers sliding past each other at melt densities is studied using extensive coarse-grained molecular dynamics simulations and scaling arguments, and the results are compared to the friction between bilayers of linear polymer brushes. We show that for a velocity range spanning over three decades, the frictional forces measured for ring polymer brushes are half of the corresponding friction in the case of linear brushes. In the linear-force regime, the weak inter-digitation between ring brush layers as compared to linear brushes leads also to a lower number of binary collisions between the monomers from opposing brushes. At high velocities, where the thickness of the inter-digitation between bilayers is on the order of monomer size regardless of brush topology, stretched segments of ring polymers adopt the double-stranded conformation. As a result, monomers of the double-stranded segments collide on average less with the monomers of the opposing ring brush even though a similar number of monomers occupies the inter-digitation layer for ring and linear brush bilayers. The numerical data obtained from our simulations are consistent with the proposed scaling analysis. Conformation-dependent fric...Continue Reading

References

Feb 1, 1996·Journal of Molecular Graphics·W HumphreyK Schulten
Jun 24, 1996·Physical Review Letters·G S Grest
Jul 20, 2002·Science·Nobuo MaedaJacob N Israelachvili
Apr 2, 2003·Advances in Colloid and Interface Science·E P K CurrieM A Cohen Stuart
Sep 12, 2003·Nature·Uri RavivJacob Klein
May 14, 2004·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Florent GoujonDominic J Tildesley
Jul 30, 2004·Nature·Michael UrbakhJacob Israelachvili
Sep 16, 2004·Journal of Biomedical Materials Research. Part a·Marcel BenzJacob Israelachvili
Jan 10, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Debby P ChangStefan Zauscher
Jan 30, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Benoît Liberelle, Suzanne Giasson
Oct 28, 2008·Nature Materials·M KapnistosM Rubinstein
Sep 7, 2006·Physical Chemistry Chemical Physics : PCCP·Feng Zhou, Wilhelm T S Huck
Jan 23, 2010·Nature Materials·Martien A Cohen StuartSergiy Minko
Jan 28, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·A GaluschkoJ Baschnagel
Jun 7, 2011·The Journal of Chemical Physics·Jonathan D HalversonKurt Kremer
Jun 7, 2011·The Journal of Chemical Physics·Jonathan D HalversonKurt Kremer
Nov 15, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Jan-Michael Y CarrilloAndrey V Dobrynin
Mar 10, 2012·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Yangpeng OuMark J Stevens
Apr 11, 2014·Journal of the American Chemical Society·Xavier BanquyJacob Israelachvili

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Citations

Oct 25, 2016·Angewandte Chemie·Giulia MorgeseEdmondo M Benetti
Feb 21, 2018·Soft Matter·Wenjuan QiuQiang Wang
May 31, 2017·Chemistry : a European Journal·Edmondo M BenettiLucca Trachsel
Mar 11, 2021·Advances in Colloid and Interface Science·Gustavo S LuengoAndrew J Greaves
Sep 19, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Wenqing YanEdmondo M Benetti
Aug 2, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·J P MahalikRajeev Kumar

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