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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 50: Poster Session III

CPP 50.1: Poster

Dienstag, 17. März 2020, 14:00–16:00, P1C

Cluster of supracolloidal magnetic polymers in a flow — •Ekaterina Novak, Elena Pyanzina, and Pedro Sanchez — Ural Federal University, Ekaterinburg, Russia

The active study of nanoparticles has opened new perspectives in the soft matter physics. Construction of supracolloidal magnetic polymers (polymer-like structures in which magnetic nanoparticles are playing the role of monomers) has recently been made possible. The advantage of such magnetic polymers is that they keep their structure independently from the temperature and that is why they can be potentially used as an alternative to nanoparticles in magnetic fluids to obtain a desired and easily controlled magnetic or rheological response. In suspension of magnetic polymers with ferromagnetic particles and central attraction in the absence of an applied field quasi-spherical clusters are formed. One of that clusters is placed in the microchannel, where its behavior in the shear flow is investigated, varying a wide range of system parameters. We find that with time the cluster gets elongated. The higher is the shear rate the faster the flow can deform the cluster. The deformation happens slower if the dipolar interaction is stronger.