Dresden 2026 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 46: Poster II
CPP 46.55: Poster
Donnerstag, 12. März 2026, 09:30–11:30, P5
Controlling porosity in supraparticles: A simulation study using spherical and rod-shaped particles — •Kritika Kritika1,2, Mayukh Kundu3, Michael Howard3, and Arash Nikoubashman1,2 — 1Leibniz Institute of Polymer Research Dresden, Germany — 2Institute of Theoretical Physics, TU Dresden, Germany — 3Department of Chemical Engineering, Auburn University, Auburn, USA
Supraparticles (SPs) are large assemblies of smaller colloidal particles, whose properties can be tuned by modifying, e.g., the chemistry, shape, and size of the individual constituent particles and their arrangement within the SP. SPs can be formed through droplet drying, a process commonly observed in both everyday life and industrial applications, such as spray drying and printing. Porous SPs are of particular interest, since their high surface area and tunable pore size distribution make them ideal materials for catalysis, photonics, and adsorption applications. In this computational study, we explore the drying-induced formation of SPs made from spherical and rod-shaped particles. After drying, we selectively remove one of the particle components, leaving behind a highly porous SP. The initial volume fraction between spherical and rod-shaped particles plays a key role in shaping the porosity within the SP, while increasing the aspect ratio of the rods further amplifies the porosity of the SPs. Additionally, we observed that slower drying leads to a distinct increase in average pore size.
Keywords: Supraparticles; Droplet drying; Colloidal assembly; Computational modeling