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Colloid and Polymer Science
Erschienen in: Colloid and Polymer Science 8/2014

01.08.2014 | Original Contribution

Dielectric loss of poly(vinylacetate) at electric fields of 400 kV/cm

verfasst von: Ullas Pathak, Ranko Richert

Erschienen in: Colloid and Polymer Science | Ausgabe 8/2014

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Abstract

Using quasi-steady-state and time-resolved high-field impedance techniques, the frequency-dependent dielectric permittivity of poly(vinylacetate) has been studied at electric field amplitudes as high as 400 kV/cm. The relative changes of the dielectric loss depend quadratically on the field amplitude and reach about 1 %. The magnitude and frequency-dependence of this non-linear dielectric effect and its time evolution after applying the high field are consistent with energy absorption from the field being at the source of the non-linear behavior. Based upon a phenomenological model of heterogeneous dynamics at isothermal conditions, the observed changes can be explained by locally increased configurational temperatures and the resulting accelerated dynamics.
Vorheriger Artikel Glass transition cooperativity from broad band heat capacity spectroscopy
Nächster Artikel Oscillatory shear and high-pressure dielectric study of 5-methyl-3-heptanol

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Metadaten
Titel
Dielectric loss of poly(vinylacetate) at electric fields of 400 kV/cm
verfasst von
Ullas Pathak
Ranko Richert
Publikationsdatum
01.08.2014
Verlag
Springer Berlin Heidelberg
Erschienen in
Colloid and Polymer Science / Ausgabe 8/2014
Print ISSN: 0303-402X
Elektronische ISSN: 1435-1536
DOI
https://doi.org/10.1007/s00396-014-3231-y

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