Normal Forces between Cellulose Surfaces Measured with Colloidal Probe Microscopy.

TitleNormal Forces between Cellulose Surfaces Measured with Colloidal Probe Microscopy.
Publication TypeJournal Article
Year of Publication2000
AuthorsS Zauscher, and DJ Klingenberg
JournalJournal of Colloid and Interface Science
Volume229
Issue2
Start Page497
Pagination497 - 510
Date Published09/2000
Abstract

Colloidal probe microscopy was employed to study interactions between cellulose surfaces in aqueous solutions. Hydrodynamic forces must be accounted for in data analysis. Long-range interactions betweeen cellulose surfaces are governed by double-layer forces and, once surfaces contact, by osmotic repulsive forces and viscoelasticity. Increasing the ionic strength decreases surface potentials and increases adhesive forces. Polyelectrolytes cause strong steric repulsion at high surface coverage, where interactions are sensitive to probe velocity. Polymer bridging occurs at low coverage. The conformation of adsorbed polyelectrolytes depends on the polymer concentration. Copyright 2000 Academic Press.

DOI10.1006/jcis.2000.7008
Short TitleJournal of Colloid and Interface Science