Dynamic mechanical behaviour of the magneto-sensitive elastomers in a homogeneous magnetic field

• Applicant: Privatdozentin Dr. Marina Grenzer
• Subject Area: Polymer Materials ; Theoretical Condensed Matter Physics
• Term: from 2013 to 2018
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 244521084

• Final Report Year: 2017

Final Report Abstract

To conclude, the proposed dynamic models with regular particle distributions describe quite well the dynamicmechanical properties of MSEs observed in experiments. For MSEs with isotropic particle distribution the proposed theory provides the analytical equations which allowed to fit experimental data, the values of fitting parameters being in a good agreement with experimental data. It was shown that MSEs with anisotropic particle distribution are more sensitive to the external magnetic field as compared to the MSEs with isotropic particle distributions. This fact agrees well with experimental observations. Irregular particle distributions can lead to rich and nontrivial mechanical behavior of MSEs under external magnetic field. It demands a detailed and rigorous analysis. The established structure-property relationships can be used for designing specific magneto-sensitive smart materials with target technologically important properties. The present project dealt exclusively with the dynamics of MSEs with unchangeable spatial distributions of magnetic particles under application of magnetic fields of moderate strength. The influence of particle rearrangements on the dynamic-mechanical behaviour of MSEs under strong magnetic fields can be a topic of future studies in the frame of follow-up project.

Publications

• Encyclopedia of Polymeric Nanomaterials, ch. Magnetorheological elastomers (Section ”Rubbers and Elastomers”), pp. 1–8. Springer Berlin Heidelberg, 2014
  D. Ivaneiko, V. Toshchevikov, M. Saphiannikova, and G. Heinrich
  
• “Mechanical properties of magneto-sensitive elastomers in a homogeneous magnetic field: theory and experiment,” Macromolecular Symposia, vol. 338, pp. 96–107, 2014
  D. Ivaneyko, V. Toshchevikov, D. Borin, M. Saphiannikova, and G. Heinrich
  
• “Mechanical properties of magnetosensitive elastomers: unification of the continuum-mechanics and microscopic theoretical approaches,” Soft Matter, vol. 10, no. 3, pp. 2213–2225, 2014
  D. Ivaneyko, V. Toshchevikov, M. Saphiannikova, and G. Heinrich
  
• “Soft magnetic elastomers with controllable stiffness: experiments and modelling,” Kautschuk Gummi Kunststoffe, vol. 4, no. 3, pp. 53–59, 2014
  C. Hintze, D. Y. Borin, D. Ivaneyko, V. Toshchevikov, M. Saphiannikova-Grenzer, and G. Heinrich
  
• “Dynamic moduli of magneto-sensitive elastomers: a coarse-grained network model,” Soft Matter, vol. 11, pp. 7627–7638, 2015
  D. Ivaneyko, V. Toshchevikov, and M. Saphiannikova
  
• “Elongated micro-structures in magneto-sensitive elastomers: a dipolar mean field model,” Soft Matter, vol. 12, pp. 9364–9376, 2016
  D. Romeis, V. Toshchevikov, and M. Saphiannikova