STATIC AND KINETIC FRICTION OF STRONGLY CONFINED POLYMER-FILMS UNDER SHEAR

Citation
S. Hirz et al., STATIC AND KINETIC FRICTION OF STRONGLY CONFINED POLYMER-FILMS UNDER SHEAR, Macromolecules, 29(11), 1996, pp. 3970-3974
Citations number
27
Categorie Soggetti
Polymer Sciences
Journal title
ISSN journal
00249297
Volume
29
Issue
11
Year of publication
1996
Pages
3970 - 3974
Database
ISI
SICI code
0024-9297(1996)29:11<3970:SAKFOS>2.0.ZU;2-C
Abstract
In the present work, we investigate the dependence of relaxational pro cesses in strongly confined polymer liquids as a function of the molec ular mass and of the confining film thickness, both theoretically and experimentally. A qualitative agreement is observed between the theore tical predictions and experimental findings. On the basis of the propo sed theory and experimental data, we estimate the relaxation time of t he polymer segments in the first surface layer and far away from the s urfaces as well as the maximum stress relaxation time.