Jump to main content
Jump to site search

Issue 5, 2015
Previous Article Next Article

Modulation of friction dynamics in water by changing the combination of the loop- and graft-type poly(ethylene glycol) surfaces

Author affiliations

Abstract

A Velcro-like poly(ethylene glycol) (PEG) interface was prepared in order to control the friction dynamics of material surfaces. Graft- and loop-type PEGs were formed on mirror-polished Ti surfaces using an electrodeposition method with mono- and di-amine functionalized PEGs. The friction dynamics of various combinations of PEG surfaces (i.e., graft-on-graft, loop-on-loop, graft-on-loop, and loop-on-graft) were investigated by friction testing. Here, only the Velcro-like combinations (graft-on-loop and loop-on-graft) exhibited a reversible friction behavior (i.e., resetting the kinetic friction coefficient and the reappearance of the maximum static friction coefficient) during the friction tests. The same tendency was observed when the molecular weights of loop- and graft-type PEGs were tested at 1 k and 10 k, respectively. This indicates that a Velcro-like friction behavior could be induced by simply changing the conformation of PEGs, which suggests a novel concept of altering polymer surfaces for the effective control of friction dynamics.

Graphical abstract: Modulation of friction dynamics in water by changing the combination of the loop- and graft-type poly(ethylene glycol) surfaces

Back to tab navigation

Publication details

The article was received on 17 Sep 2014, accepted on 03 Dec 2014 and first published on 03 Dec 2014


Article type: Paper
DOI: 10.1039/C4SM02082K
Author version
available:
Download author version (PDF)
Soft Matter, 2015,11, 936-942

  •   Request permissions

    Modulation of friction dynamics in water by changing the combination of the loop- and graft-type poly(ethylene glycol) surfaces

    J. Seo, Y. Tsutsumi, A. Kobari, M. Shimojo, T. Hanawa and N. Yui, Soft Matter, 2015, 11, 936
    DOI: 10.1039/C4SM02082K

Search articles by author

Spotlight

Advertisements