Dielectric relaxations in poly(ethylene oxide) based polymers (Articolo in rivista)

Type
Label
  • Dielectric relaxations in poly(ethylene oxide) based polymers (Articolo in rivista) (literal)
Anno
  • 1993-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/0167-2738(93)90399-N (literal)
Alternative label
  • M Federico, G Galli, G Salvato (1993)
    Dielectric relaxations in poly(ethylene oxide) based polymers
    in Solid state ionics (Print); ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, AMSTERDAM (Paesi Bassi)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • M Federico, G Galli, G Salvato (literal)
Pagina inizio
  • 323 (literal)
Pagina fine
  • 326 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 61 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 4 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • IST NAZL FIS MAT,UNITA MESSINA,I-98166 MESSINA,ITALY ISTITUTO TECNICHE SPETTROSCOPICHE del CNR,I-98166 MESSINA,ITALY (literal)
Titolo
  • Dielectric relaxations in poly(ethylene oxide) based polymers (literal)
Abstract
  • n the present work the poly(ethylene oxide) complexed with the NaSCN salt dielectric response is analysed at various salt contents (3%, 11% and 22%) with temperature ranging from 90 to 300 K and frequency from 20 Hz to 2 kHz. Previous studies of the epsilon experimental data have shown the gamma-peak followed by a rapid increase of the dielectric function due to the conductivity relaxation peak. Between the gamma and the conductivity relaxation peaks a weak shoulder has often been observed. The analysis of this feature in terms of the electric modulus reveals thal it corresponds to a broad ''peak'', usually masked by the conductivity contribution. The position of the shoulder shifts to higher temperatures by increasing both salt content and frequency. A quantitative analysis in terms of a relaxation times distribution with a Gaussian distribution function for the activation energies gives a good fit of the experimental data. (literal)
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