4.7 Article

Molecular mobility in piezoelectric hybrid nanocomposites with 0-3 connectivity: Volume fraction influence

期刊

JOURNAL OF NON-CRYSTALLINE SOLIDS
卷 357, 期 19-20, 页码 3410-3415

出版社

ELSEVIER
DOI: 10.1016/j.jnoncrysol.2011.06.009

关键词

Polymer; Piezoelectric; Composite; Barium titanate; Polyamide

资金

  1. DGCIS
  2. Region Midi-Pyrenees under NACOMAT program

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Thermo Stimulated Current and Dynamic Dielectric Spectroscopy studies were carried out on hybrid ferroelectric Polyamide 11/Barium Titanate to investigate dielectric relaxation modes. The correlated results obtained by both methods allow us to describe precisely the molecular mobility of this 0-3 nanocomposite; in this work we will focus on the influence of the 700 nm nanoparticles volume fraction. The dielectric spectroscopy shows that the molecular mobility associated with the liquid dynamic is not influenced by the volume fraction. The evolution of low frequency relaxation, observed by depolarization currents techniques, have been attributed to the decrease of Cooperative Rearranging Region size and the increase of intra/inter macromolecular interactions in the soft amorphous phase. (C) 2011 Elsevier B.V. All rights reserved.

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