Dielectric spectroscopy and thermally stimulated discharge current in PEEK film

Dielectric spectroscopy and thermally stimulated discharge current in PEEK film

The complex permittivity of films of polyether ether ketone (PEEK) has been investigated over a wide range of frequency. There is no relaxation peak in the range of 1Hz to 10 5 Hz but in the low- frequency side (10 -4 Hz) there is an evidence of a peak that also can be observed by thermally stimulat...

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Main Author: W. K. Sakamoto
Format: Article
Language:English
Published: Universidade Estadual Paulista 2018-05-01
Series:Eclética Química
Online Access:https://revista.iq.unesp.br/ojs/index.php/ecletica/article/view/522
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spelling doaj-3c86d426b6a44b278dc19384f4b3a3e12020-11-25T00:03:58ZengUniversidade Estadual PaulistaEclética Química1678-46182018-05-01282495410.26850/1678-4618eqj.v28.2.2003.p49-54522Dielectric spectroscopy and thermally stimulated discharge current in PEEK filmW. K. Sakamoto0Departamento de Física e Química – FEG/UNESP - CEP 15385-000 Ilha Solteira –SP – BrasilThe complex permittivity of films of polyether ether ketone (PEEK) has been investigated over a wide range of frequency. There is no relaxation peak in the range of 1Hz to 10 5 Hz but in the low- frequency side (10 -4 Hz) there is an evidence of a peak that also can be observed by thermally stimulated discharge current measurements. That peak is related with the glass transition temperature (T g ) of the polymer. The activation energy of the relaxation was found to be 0.44 eV, similar to that of several synthetic polymers. Space charges are important in the conduction mechanism as shown by discharging transient.https://revista.iq.unesp.br/ojs/index.php/ecletica/article/view/522
collection DOAJ
language English
format Article
sources DOAJ
author W. K. Sakamoto
spellingShingle W. K. Sakamoto
Dielectric spectroscopy and thermally stimulated discharge current in PEEK film
Eclética Química
author_facet W. K. Sakamoto
author_sort W. K. Sakamoto
title Dielectric spectroscopy and thermally stimulated discharge current in PEEK film
title_short Dielectric spectroscopy and thermally stimulated discharge current in PEEK film
title_full Dielectric spectroscopy and thermally stimulated discharge current in PEEK film
title_fullStr Dielectric spectroscopy and thermally stimulated discharge current in PEEK film
title_full_unstemmed Dielectric spectroscopy and thermally stimulated discharge current in PEEK film
title_sort dielectric spectroscopy and thermally stimulated discharge current in peek film
publisher Universidade Estadual Paulista
series Eclética Química
issn 1678-4618
publishDate 2018-05-01
description The complex permittivity of films of polyether ether ketone (PEEK) has been investigated over a wide range of frequency. There is no relaxation peak in the range of 1Hz to 10 5 Hz but in the low- frequency side (10 -4 Hz) there is an evidence of a peak that also can be observed by thermally stimulated discharge current measurements. That peak is related with the glass transition temperature (T g ) of the polymer. The activation energy of the relaxation was found to be 0.44 eV, similar to that of several synthetic polymers. Space charges are important in the conduction mechanism as shown by discharging transient.
url https://revista.iq.unesp.br/ojs/index.php/ecletica/article/view/522
work_keys_str_mv AT wksakamoto dielectricspectroscopyandthermallystimulateddischargecurrentinpeekfilm
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