Dresden 2026 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 42: French-German Session: Nanomaterials, Composites and Hybrids II

CPP 42.5: Vortrag

Mittwoch, 11. März 2026, 18:15–18:30, ZEU/0260

Microstructure analysis of intermediate states in the structure formation process of magnetorheological elastomers — •Nils Magin and Stefan Odenbach — TU Dresden

A composite of magnetic particles and an elastic polymer matrix is referred to as a magnetorheological elastomer. The size and concentration of magnetic particles, as well as the elasticity of the matrix, are the determining factors in the magnetorheological (MR) effect of such materials. Materials exhibiting significant MR properties are commonly referred to as MR elastomers. The application of an external homogeneous magnetic field during the polymerisation process enables the structuring of particles in the initially liquid polymer matrix, resulting in the fabrication of an anisotropic (or structured) material. In order to facilitate a more profound comprehension of the structural formation, the application of the magnetic field is initiated at discrete phases of the polymerisation process. This process gives rise to intermediate states in the structuring that can be observed. The microstructure is examined using computer X-ray tomography and image processing. Furthermore, the influence of the magnetic field, particle concentration, and sample height on the microstructure is discussed. We acknowledge support by the German Research Foundation DFG through Research Unit FOR 5599 on structured magnetic elastomers.

Keywords: Magnetorheological Elastomers; Magnetic Structuring; X-ray tomography