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  4. The effect of processing conditions on the morphology, thermomechanical, dielectric, and piezoelectric properties of P(VDF-TrFE)/BaTiO3 composites
 
research article

The effect of processing conditions on the morphology, thermomechanical, dielectric, and piezoelectric properties of P(VDF-TrFE)/BaTiO3 composites

Vacche, Sara Dalle  
•
Oliveira, Fabiane  
•
Leterrier, Yves  
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2012
Journal of Materials Science

In this study (0-3) P(VDF-TrFE)/BaTiO3 composites containing up to 60 vol% of ceramic phase were prepared by solvent casting or compression molding. Their thermomechanical, dielectric, and piezoelectric properties were investigated, and discussed in the light of the properties of the basic components, the processing route and the resulting morphology. The crystalline structure of the P(VDF-TrFE) matrix was found to be highly dependent on the processing route, while the structure of BaTiO3 was not affected by any of the processing steps. The mechanical properties of the solvent cast materials showed a maximum at 30 vol% BaTiO3, while they increased monotonically with BaTiO3 content for compression molded materials. This difference was attributed to a higher amount of porosity and inhomogeneities in the solvent cast composites. Permittivity as high as 120 and piezoelectric coefficient d(33) up to 32 pC/N were obtained for compression molded composites, and the observed decrease in d(33) with aging time was attributed to the effect of mechanical stress release in the polymer matrix.

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Type
research article
DOI
10.1007/s10853-012-6362-x
Web of Science ID

WOS:000302244500031

Author(s)
Vacche, Sara Dalle  
Oliveira, Fabiane  
Leterrier, Yves  
Michaud, Véronique  
Damjanovic, Dragan  
Månson, Jan-Anders E.  
Date Issued

2012

Publisher

Springer Verlag

Published in
Journal of Materials Science
Volume

47

Start page

4763

End page

4774

Subjects

Fluoride-Trifluoroethylene Composites

•

Ceramic-Polymer Composites

•

Lead-Zirconate-Titanate

•

Barium-Titanate

•

Electromechanical Properties

•

Vinylidene Fluoride

•

Pvdf Composite

•

Particle-Size

•

Co-Polymers

•

Batio3

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LC  
LTC  
Available on Infoscience
April 26, 2012
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/79644
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