Friction between cellulose surfaces and the effect of and xyloglucan adsorption
2006 (English)In: Biomacromolecules, ISSN 1525-7797, E-ISSN 1526-4602, Vol. 7, no 7, 2147-2153 p.Article in journal (Refereed) Published
The forces and friction between cellulose spheres have been measured in the absence and presence of xyloglucan using an atomic force microscope. The forces between cellulose are monotonically repulsive with negligible adhesion after contact is achieved. The friction coefficient is observed to be unusually high in comparison with other nanotribological systems. We have confirmed that xyloglucan adsorbs strongly to cellulose, which results in a much stronger adhesion, which is dependent on the time the surfaces are in contact. Xyloglucan also increases the repulsion on approach of the cellulose surfaces, and the friction is markedly reduced. The apparently incompatible observations of decreased friction in combination with increased adhesion fulfills many of the necessary criteria for a papermaking additive.
Place, publisher, year, edition, pages
2006. Vol. 7, no 7, 2147-2153 p.
ATOMIC-FORCE MICROSCOPY, COLLOIDAL PROBE MICROSCOPY, PLANT-CELL WALL, ADSORBED POLYELECTROLYTE LAYERS, TORSIONAL SPRING CONSTANT, SILICA SURFACES, ADHESION, FILMS, CONFORMATIONS, PAPERMAKING
IdentifiersURN: urn:nbn:se:kth:diva-9075DOI: 10.1021/bm060100iISI: 000238848800010ScopusID: 2-s2.0-33746287565OAI: oai:DiVA.org:kth-9075DiVA: diva2:14632
QC 20100915. Uppdaterad från Submitted till Published (20100915)2006-02-102006-02-102012-03-21Bibliographically approved