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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 3: Hydrogels and Microgels
CPP 3.3: Vortrag
Montag, 27. März 2023, 10:00–10:15, ZEU 255
How topology impacts magnetic and rheological properties of a suspension of magnetic nanogels — •Ivan Novikau1, Alla Dobroserdova2, Ekaterina Novak2, and Sofia Kantorovich1,2 — 1University of Vienna, Austria — 2Ekaterinburg, Russia
Hydrogels are soft materials, that attracted solid interest over the last 6 decades and are widely used in chemical, biomedical, and even civil engineering applications. Today, at the front edge of gels' realm stand out nanogels, often additionally functionalization, for instance, by magnetic nanoparticles.
Given the magnetic nanogels (MNG's) size, typical time and velocity scales involved in their nanofluidics, experimental characterization of the systems is difficult. Here, we use molecular dynamics (MD) simulations in conjunction with the Lattice-Boltzmann (LB) scheme in order to describe how the MNG topology affects the rheological and magnetic properties of their suspensions.
We study in detail how the shape and magnetization of a single MNG are affected by the distribution of crosslinkers: uniform, with a displaced centre of mass, with Gaussian distribution from the centre to the periphery and reverse. The impact of a topology in a combination with an external magnetic field on MNG's viscoelastic and magnetic characteristics of the suspensions is also explored.