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Article

Theory of Friction between Neutral Polymer Brushes

J. B. Sokoloff^†

Department of Physics and Center for Interdisciplinary Research on Complex Systems, Northeastern University, Boston, Massachusetts 02115

Macromolecules, 2007, 40 (11), pp 4053–4058

DOI: 10.1021/ma062875p

Publication Date (Web): May 4, 2007

†

E-mail: j.sokoloff@neu.edu.

Abstract

A type of static friction between two polymer brush coated surfaces resulting from fluctuations from mean-field theory is found, but with creeplike motion for forces below the force of static friction, which is much more rapid than the usual creep between solid surfaces in contact. At sufficiently light loads, it is shown that polymer brush coated surfaces can slide, with the load supported entirely by osmotic pressure, and thus exhibit no static friction and only extremely weak viscous kinetic friction.

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History

Published In Issue May 29, 2007
Received December 15, 2006
Revised Manuscript Received March 21, 2007

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Theory of Friction between Neutral Polymer Brushes

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