Friction as a probe of surface properties of a polymer glass

Details Friction as a probe of surface properties of a polymer glass Friction as a probe of surface properties of a polymer glass

2007-07-12

arxiv.org/abs/0707.1806v2

Macromolecules 40, 25 (2007) 9197

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1021/ma071544p

We probe the temperature dependence of friction at the interface between a glassy poly(methylmethacrylate) lens and a flat substrate coated with a methyl-terminated self-assembled monolayer. The monolayer exhibits density defects which act as pinning sites for the polymer chains. We show that the shear response of such an interface supports the existence, at the surface of the glassy polymer, of a nanometer-thick layer of mobile chains. Friction can be ascribed to the interplay between viscouslike dissipation in this layer and depinning of chains adsorbed on the substrate. We further show that the pinning dynamics is controlled by \beta rotational motions localized at the interface.

Affiliated with

Also associated with

No associations

Rating

Friction as a probe of surface properties of a polymer glass does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Friction as a probe of surface properties of a polymer glass, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Friction as a probe of surface properties of a polymer glass will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-161297