Regensburg 2016 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 20: Focus: Functional Polymer Hybrids I
CPP 20.10: Vortrag
Dienstag, 8. März 2016, 12:30–12:45, H51
The effect of particle rearrangement in magneto-sensitive elastomers — •Dirk Romeis1, Philipp Metsch2, Markus Kästner2, and Marina Saphiannikova1 — 1Leibniz-Institut für Polymerforschung Dresden e.V. — 2Technische Universität Dresden
Magnetorheological elastomers are composites that consist of magnetically permeable particles incorporated into an elastic polymer matrix. When the magnetic field is applied to such material, changes in the shape and the mechanical moduli occur. The response of the material crucially depends on the actual distribution of the magnetizable particles and wether or not these particles can additionally rearrange with respect to the surrounding polymer network. We present a mean-field approach for initially statistically distributed magnetic dipoles and allow the formation of elongated microstructures in direction of the applied field. The results of the mean-field approach are compared with the predictions of a microscopic contiuum model of similar composites.