(363f) Topological DLVO Interactions of Spiky Particles with a Planar Substrate
AIChE Annual Meeting
2021
2021 Annual Meeting
Engineering Sciences and Fundamentals
Anisotropic Particles: Synthesis, Characterization, Modeling, Assembly, and Applications
Tuesday, November 9, 2021 - 4:30pm to 4:45pm
We quantify the DVLO interactions of the spiky particle with a planar substrate using the surface element integration method with a high-resolution surface mesh. We validated the results using a particle with tiny spikes near the limit of a smooth spherical particle interacting with the planar surface. Results show decreasing interaction energy as a function of position as the spike length increases. On the other hand, the DLVO interaction energy is highly dependent on the relative particle orientation with respect to the wall. It shows a maximum variation in the orientational space near the region with more spikes in contact with the substrate. Furthermore, the same orientational interaction energy dependence is found with different superellipsoid spikes, which directly correlates with the topological spike distribution but not with its shape, which shows how the spiky particles enhance the particle interaction with planar substrates.