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A Modeling Approach to Describe the Adhesion of Rough, Asymmetric Particles to Surfaces by Sean Eichenlaub; Gautam Kumar; Stephen Beaudoin is a Chemistry article available to read on EtoBox.

What is A Modeling Approach to Describe the Adhesion of Rough, Asymmetric Particles to Surfaces about?

A combined theoretical and experimental study of the adhesion of alumina particles and polystyrene latex spheres to silicon dioxide surfaces was performed. A boundary element technique was used to model electrostatic interactions between micron-scale particles and planar surfaces when the particles and surfaces were in contact. This method allows quantitative evaluation of the effects of particle geometry and surface roughness on the electrostatic interaction. The electrostatic interactions are combined with a previously developed model for van der Waals forces in particle adhesion. The combined model accounts for the effects of particle and substrate geometry, surface roughness and asperity deformation on the adhesion force. Predictions from the combined model are compared with experimental measurements made with an atomic force microscope. Measurements are made in aqueous solutions of varying ionic strength and solution pH. While van der Waals forces are generally dominant when particles are in contact with surfaces, results obtained here indicate that electrostatic interactions contribute to the overall adhesion force in certain cases. Specifically, alumina particles with comple

Who reads A Modeling Approach to Describe the Adhesion of Rough, Asymmetric Particles to Surfaces?

Author

Sean Eichenlaub; Gautam Kumar; Stephen Beaudoin

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 0021-9797)

Published

2006

Language

EN

Field

Chemistry (Physical Sciences)