A modeling approach to describe the adhesion of rough, asymmetric particles to surfaces

Journal of Colloid and Interface Science
Sean EichenlaubS Beaudoin

Abstract

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 complex geometries were found to adhere to surfaces d...Continue Reading

References

Feb 3, 2000·Journal of Colloid and Interface Science·K CooperS Beaudoin
Aug 5, 2000·Journal of Colloid and Interface Science·K CooperS Beaudoin
Feb 13, 2001·Journal of Colloid and Interface Science·Ning Sun, John Y. Walz
Feb 13, 2001·Journal of Colloid and Interface Science·Kevin CooperStephen Beaudoin
Nov 10, 2004·Journal of Colloid and Interface Science·Sean EichenlaubSteve Beaudoin

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Citations

Dec 4, 2012·International Journal of Molecular Sciences·Fabio L LeiteOsvaldo N Oliveira
Dec 31, 2010·Journal of Colloid and Interface Science·Jean G DetryPaul G Rouxhet
Aug 31, 2010·Colloids and Surfaces. B, Biointerfaces·Megan Farrell, Stephen Beaudoin
Oct 8, 2014·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Moharam H KorayemMoein Taheri
Nov 24, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Christophe HenryGrégory Lefèvre
Sep 9, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Ravi P JaiswalStephen P Beaudoin
Dec 17, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Xiao-Dong WangZhan-Shan Wang
Nov 17, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Xiaofei HuangEric M V Hoek
Oct 12, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Polina Prokopovich, Stefano Perni

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