Understanding particle interactions from a microscopic view of particulate interfaces--颗粒学报PARTICUOLOGY

Peukert, W., & Goetzinger, M. (2005). Understanding particle interactions from a microscopic view of particulate interfaces. China Particuology, 3(1), 14-18. https://doi.org/10.1016/S1672-2515(07)60154-7

Understanding particle interactions from a microscopic view of particulate interfaces

Wolfgang Peukert ^*, Martin Goetzinger

Institute of Particle Technology, University of Erlangen, Germany

10.1016/S1672-2515(07)60154-7

Volume 3, Issues 1–2, April 2005, Pages 14-18

Received 20 January 2005, Accepted 1 February 2005, Available online 14 December 2007.

E-mail: W.Peukert@lfg.uni-erlangen.de

Highlights

Abstract

Particle interactions are of crucial importance in many applications including fluidized beds and other powder handling systems. The present contribution discusses how surface properties of the particles can be determined in order to get quantitative information on particle interactions. For instance, we apply adsorption experiments in order to get information on dispersive and polar interactions. These measurements are complemented by careful roughness measurements as well as FTIR-spectroscopy and TG-MS analysis. Adhesion force measurements with AFM and ultracentrifuge on well defined ideal as well as heterogeneous surfaces led to the introduction of three generic types of adhesion force distributions: monomodal Weibull, bimodal Weibull and lognormal. The influence of roughness and adsorbed layers on adhesion are shown. In addition, we discuss important aspects of the dynamic nature of the adhesion/detachment process by means of MD-simulations.

Graphical abstract

Keywords

particle interaction; adhesion; adsorption; molecular dynamics

文章导读