Open-porous, viscoelastic particles are present in biological systems (e.g. casein micelles) and industrial products (e.g. microgel particles in toothpaste, cosmetics, paints etc.). Their characteristic sponge-like structure gives rise to elastic behavior, while at the same time the particle’s size- and shape-change is hampered at high deformation rates due to the viscosity of the permeating solvent. This project is concerned with the development of a concurrent two-scale model for the rate-dependent mechanical behavior of suspensions and gels of such particles, accounting for the properties of particles and their interaction explicitly.
Research type: theory/modelling