Friction and forces between cellulose model surfaces: a comparison.
Four different cellulose model surfaces, and one silica surface, have been studied by means of atomic force microscopy (AFM). The normal interactions have been found to consist of a longer range double layer force with a short range steric interaction, the nature of which is extensively discussed. Both the surface charge and range of the steric force depend on the type of cellulose substrate used, as does the magnitude of the adhesion. Studies of friction reveal that surface roughness is the determining factor for the friction coefficient, with which it increases monotonically. The absolute value, however, is determined by the surface chemistry. All studied cellulose surfaces show similar behavior in response to xyloglucan addition.
Stiernstedt
Johanna
J
Department of Chemistry, Surface Chemistry, Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
Nordgren
Niklas
N
Wågberg
Lars
L
Brumer
Harry
H
Gray
Derek G
DG
Rutland
Mark W
MW
D002482:Cellulose; D017276:Friction; D005936:Glucans; D018625:Microscopy, Atomic Force; D013499:Surface Properties; D014990:Xylans
D005936:Glucans; D014990:Xylans; C029353:xyloglucan; D002482:Cellulose