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| Soufivand, Anahita Ahmadi |
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| Fearraigh, B. Ó. |
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| Bhaswant, Maharshi |
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| Mouni, Lotfi |
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| Ghosh, Angsula |
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| Romero Resendiz, Liliana |
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| Mendesfelipe, Cristian |
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| Golias, Evangelos | Lund |
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| Pons, Tony |
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| Ferreira, Saulo Rocha |
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| Sanguineti, M. |
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| Ziegler, Andreas |
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| Zhang, Kailun |
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| Höfer, Philipp |
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| Zhengis, Arshyn |
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| Danelon, Miguel R. |
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| Baral, P. |
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| Beltrán, Ana M. |
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| Vippola, Minnamari | Tampere |
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| Perna, Alessia Serena | Naples |
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| Larsson, Henrik | Stockholm |
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| Kpemou, A. M. |
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| Le Gall, Alice |
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| Matteo, Pietro Di |
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| Kojouri, Ali Shivaie |
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Michaud, Veronique
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Publications (7/7 displayed)
- 2025Combined computational-experimental investigation of residual stresses and pre-cracking in mode I behaviour of thick adhesively bonded GFRP composite jointscitations
- 2021Development and Characterization of Rice Husk and Recycled Polypropylene Composite Filaments for 3D Printingcitations
- 2020Interface-Dominated Time-Dependent Behavior of Poled Poly(Vinylidene Fluoride–Trifluoroethylene)/Barium Titanate Compositescitations
- 2016In-situ repair of composite sandwich structures using cyanoacrylatescitations
- 2014Effect of silane coupling agent on the morphology, structure, and properties of poly(vinylidene fluoride-trifluoroethylene)/BaTiO3compositescitations
- 2012The effect of processing conditions on the morphology, thermomechanical, dielectric, and piezoelectric properties of P(VDF-TrFE)/BaTiO3compositescitations
- 2009Hybrid glass mat reinforced polypropylene-montmorillonite nanocompositescitations
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article
Interface-Dominated Time-Dependent Behavior of Poled Poly(Vinylidene Fluoride–Trifluoroethylene)/Barium Titanate Composites
Abstract
Composites in which particles of ferroelectric ceramic phase are randomly dispersed in a polymeric matrix are of interest because of flexibility, conformability, and ease of processing. However, their piezoelectric properties are rather low, unless very high volume fractions of ceramics are used. This brings agglomeration and porosity issues due to the large mismatch between the surface energies of the ceramics and of the polymer. Particle surface modification is a common approach for better dispersion; however, it may bring other effects on the properties of the composites, which are usually concealed by the huge improvement in performance due to the more homogenous microstructure. In this work, we compared poly(vinylidene fluoride–trifluoroethylene)/barium titanate composites containing 15 vol.% and 60 vol.% of pristine ceramic particles or particles modified with an aminosilane or a fluorosilane. Similar morphology, with good particle dispersion and low porosity, was achieved for all composites, owing to an efficient dispersion method. The materials were poled with two different poling procedures, and the piezoelectric coefficient d33, the relative permittivity, and the poling degree of barium titanate were followed in time. We highlighted that, although similar d33 were obtained with all types of particles, the nature of the particles surface and the poling procedure were associated with different charge trapping and influenced the evolution of d33 with time.