Regensburg 2013 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 36: Poster: (Hydro)gels and Elastomers
CPP 36.4: Poster
Mittwoch, 13. März 2013, 16:30–18:30, Poster C
Rheological characterization of PDMS-based magnetoelastomers — •Rudolf Hasslacher1, Vitor C. Barroso1, Franz Hiptmair2, Zoltan Major2, Kerstin Schindler3, Christian Wolfrum3, and Sabine Hild1 — 1Institute of Polymer Science, Johannes Kepler University of Linz, Altenberger Strasse 69, 4040 Linz, Austria — 2Institute of Polymer Product Engineering, Johannes Kepler University of Linz, Altenberger Strasse 69, 4040 Linz, Austria — 3Eckart GmbH, Guentersthal 4, 91235 Hartenstein, Germany
Magnetoelastomers are hybrid materials based on elastomers and magnetic particles. Due to their magnetic features, their mechanical properties and shape can be controlled by external magnetic fields. Applications as mechanical actuators, mechanical dampers or for vibration reduction are conceivable.
Depending on the particle material, size and their distribution and arrangement inside the cured elastomeric matrix, the obtained mechanical properties (and possible applications) can be varied. Ultimately the movement of the particles is heavily dependent on the viscosity of the whole composite.
During this work, the preparation of the magnetoelastomeric material and corresponding rheological characterisation were carried out. The isotropic materials consisted of a crosslinkable polydimethylsiloxane (PDMS) matrix filled with different iron particles (distinguishable by shape and functionalities). The aim is to study the crosslinking behaviour and its dependence on the particle characteristics by means of time resolved rheological measurements.