title: Friction and forces between cellulose model surfaces: a comparison.
abstract: 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.
authors.affiliation: Department of Chemistry, Surface Chemistry, Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
authors.forename: Johanna
authors.initials: J
authors.lastname: Stiernstedt
authors.forename: Niklas
authors.initials: N
authors.lastname: Nordgren
authors.forename: Lars
authors.initials: L
authors.lastname: Wågberg
authors.forename: Harry
authors.initials: H
authors.lastname: Brumer
authors.forename: Derek G
authors.initials: DG
authors.lastname: Gray
authors.forename: Mark W
authors.initials: MW
authors.lastname: Rutland
mesh_terms: D002482:Cellulose; D017276:Friction; D005936:Glucans; D018625:Microscopy, Atomic Force; D013499:Surface Properties; D014990:Xylans
chemical_list: D005936:Glucans; D014990:Xylans; C029353:xyloglucan; D002482:Cellulose