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1. Electromechanical properties of ferroelectric polymers: Finsler geometry modeling and a Monte Carlo study

Author

Egorov, V., Maksimova, O., Koibuchi, H., Bernard, C., Chenal, J-M., Lame, O., Diguet, G., Sebald, G., Cavaille, J-Y., and Takagi, T.

Subjects
Condensed Matter - Soft Condensed Matter
Abstract

Polyvinylidene difluoride (PVDF) is a ferroelectric polymer characterized by negative strain along the direction of the applied electric field. However, the electromechanical response mechanism of PVDF remains unclear due to the complexity of the hierarchical structure across the length scales. As described in this letter, we employ the Finsler geometry model as a new solution to the aforementioned problem and demonstrate that the deformations observed through Monte Carlo simulations on 3D tetrahedral lattices are nearly identical to those of real PVDF. Specifically, the simulated mechanical deformation and polarization are similar to those observed experimentally., Comment: 13 pages, 5 figures

Published
2020
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7. Mechanical Behavior of Polymer Nanocomposites: A Discrete Simulation Approach

Author

GROUPE D'ETUDES DE METALLURGIE PHYSIQUEET DE PHYSIQUE DES MATERIAUX VILLEURBANNE (FRANCE), Chabert, E., Gauthier, C., Dendievel, R., Chazeau, L., Cavaille, J. Y., GROUPE D'ETUDES DE METALLURGIE PHYSIQUEET DE PHYSIQUE DES MATERIAUX VILLEURBANNE (FRANCE), Chabert, E., Gauthier, C., Dendievel, R., Chazeau, L., and Cavaille, J. Y.

Abstract

This work reports the dynamic mechanical characterization of nanocomposites based on a poly(butyl acrylate) matrix filled with spherical particles of either polystyrene or silica both of diameter around 100 nm. A discrete numerical simulation, taking into account the microstructure and the nature of contact between reinforcing particles has been developed. This simulation enables to quantify the effect of interactions between filler particles on the elastic modulus, and in a more general sense, to clarify the concept of mechanical percolation. It gives results in very good agreement with experimental data., This article is from the Mat. Res. Soc. Symposium Proceedings, v740 p155-160, 2003. This article is from ADA417952 Materials Research Society Symposium Proceedings Volume 740 Held in Boston, Massachusetts on December 2-6, 2002. Nanomaterials for Structural Applications

Published
2003

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