PERCOLATION EFFECTS ON DIELECTRIC PROPERTIES OF POLYSTYRENE/BaTiO sub(3) NANOCOMPOSITES

PERCOLATION EFFECTS ON DIELECTRIC PROPERTIES OF POLYSTYRENE/BaTiO sub(3) NANOCOMPOSITES

This work deals with preparation and characterization of polystyrene/barium titanate nanocomposites (PS/BaTiO sub(3)). The microstructure changes caused by the formation of the percolation network are evidenced by steady shear and viscoelastic tests. Surface analysis performed by atomic force micros...

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Veröffentlicht in:Scientific bulletin. Buletin științific. Series A, Applied mathematics and physycs [i.e. physics] / UPB. Series A, Applied mathematics and physyics [i.e. physics Applied mathematics and physycs [i.e. physics] / UPB. Series A, Applied mathematics and physyics [i.e. physics, 2014-01, Vol.76 (3), p.225-234
Hauptverfasser: BARZIC, Razvan Florin, BARZIC, Andreea Irina, DUMITRASCU, Gheorghe
Format: Artikel
Sprache:eng
Schlagworte:
Barium titanates
Bucharest
Dielectric properties
Dispersions
Nanocomposites
Networks
Percolation
Polystyrene resins
Shear
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Zusammenfassung:This work deals with preparation and characterization of polystyrene/barium titanate nanocomposites (PS/BaTiO sub(3)). The microstructure changes caused by the formation of the percolation network are evidenced by steady shear and viscoelastic tests. Surface analysis performed by atomic force microscopy confirms the good dispersion and distribution of the BaTiO sub(3) in PS matrix. The dielectric properties are determined both experimentally and theoretically, showing that the high polarizable BaTiO sub(3) network enhances the permittivity from 2.57 to 28, making the studied samples useful for construction of capacitors.
ISSN:1223-7027