Berlin 2015 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 50: P15: Polymers and Fields

CPP 50.2: Poster

Mittwoch, 18. März 2015, 10:00–13:00, Poster A

An alternative theoretical description of magneto-sensitive elastomers — Dirk Romeis and •Marina Saphiannikova — Leibniz-Institut für Polymerforschung Dresden e.V.

Magnetorheological elastomers are composites that consist of magnetically permeable particles incorporated into an elastic (polymer) matrix. As a magnetic field is applied to such material a deformation and changes in the mechanical properties take place. In experiments often a stretching of the sample in direction parallel to the external field is reported. In contrast, many theoretical approaches to describe such systems predict a compression in the field direction. We present an alternative microscopic approach for magneto-sensitive elastomers in an external magnetic field and find a behavior in agreement with the experimental observation. For any parameter set our results always predict a stretching in direction of the field.