Regensburg 2019 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 51: Magnetism Poster B

MA 51.10: Poster

Donnerstag, 4. April 2019, 15:00–18:00, Poster C

Examination of phase transition temperatures of magnetically doped polymer solutions — •Samira Webers¹, Melissa Hess², Joachim Landers¹, Annette M. Schmidt², and Heiko Wende¹ — ¹Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen — ²Institute for Physical Chemistry, University of Cologne

Magnetic cobalt ferrite nanoparticles incorporated in dilute and semi-dilute polymer solutions are used as tracer particles to probe the phase transitions of the hybrid material by measuring the temperature dependent magnetization. Here, a detailed investigation of polyethylene glycol/water systems are carried out to reveal the melting, freezing and glass transition temperature. Those results are compared to differential scanning calorimetry, which underlines the results measured by magnetization curves. By further studying the influence of nanoparticles in solutions to DSC curves, it was found that the corresponding glass features are suppressed. This work is supported by the DFG priority program SPP1681 (WE2623-7).