BaTiO sub(3) incorporation effect on the dielectric properties of polymer from aqueous emulsion: An enhanced dispersion technique

An economic and environment friendly process was adapted to synthesize new dielectric composite materials. Using ethylene vinyl acetate (EVA)/vinyl ester of versatic acid (VeoVa) terpolymer as an aqueous emulsion provides a homogenous dispersion of BaTiO sub(3) (BT) particles, due to the high viscos...

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Bibliographic Details
Published in:Journal of applied polymer science 2016-12, Vol.133 (48), p.n/a
Main Authors: Zyane, Adel, Belfkira, Ahmed, Brouillette, Francois, Marchet, Pascal, Lucas, Romain
Format: Article
Language:English
Subjects:
Barium titanates
Dielectric properties
Economics
Ethylene vinyl acetates
Particulate composites
Terpolymers
Vinyl ester resins
Vinyl resins
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Summary:An economic and environment friendly process was adapted to synthesize new dielectric composite materials. Using ethylene vinyl acetate (EVA)/vinyl ester of versatic acid (VeoVa) terpolymer as an aqueous emulsion provides a homogenous dispersion of BaTiO sub(3) (BT) particles, due to the high viscosity and polarity of the vinyl resin (VR). Composites films were obtained from these dispersions by water evaporation. The evolution of the dielectric properties as a function of the BaTiO sub(3) content, was correctly fitted by a Maxwell-Garnett model. This fitting of the experimental curve shows a good dispersion of filler in the vinyl resin and the particles separation by a layer of resin as expected for the preparation method used in this study. The VR/BT composites show good synergy between the dielectric properties of the different phases of the composites due to the formation of macrodipoles and to the strong interactions between polar EVA/VeoVa groups and the BaTiO sub(3) particles surface. J. Appl. Polym. Sci. 2016, 133, 44333.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.44333