Dielectric spectroscopy and thermally stimulated discharge current in PEEK film

Detalhes bibliográficos
Autor(a) principal: Sakamoto,W. K.
Data de Publicação: 2003
Tipo de documento: Relatório
Idioma: eng
Título da fonte: Eclética Química
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702003000200006
Resumo: 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 (Tg) 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.
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spelling Dielectric spectroscopy and thermally stimulated discharge current in PEEK filmdielectric lossthermally stimulated discharge currentpolymeractivation energyglass transition temperatureThe 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 (Tg) 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.Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP2003-01-01info:eu-repo/semantics/reportinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702003000200006Eclética Química v.28 n.2 2003reponame:Eclética Químicainstname:Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)instacron:UNESP10.1590/S0100-46702003000200006info:eu-repo/semantics/openAccessSakamoto,W. K.eng2004-04-02T00:00:00Zoai:scielo:S0100-46702003000200006Revistahttp://revista.iq.unesp.br/ojs/index.php/ecletica/PUBhttps://revista.iq.unesp.br/ojs/index.php/ecletica/oaiecletica@ctrlk.com.br||ecletica@iq.unesp.br1678-46181678-4618opendoar:2004-04-02T00:00Eclética Química - Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)false
dc.title.none.fl_str_mv Dielectric spectroscopy and thermally stimulated discharge current in PEEK film
title Dielectric spectroscopy and thermally stimulated discharge current in PEEK film
spellingShingle Dielectric spectroscopy and thermally stimulated discharge current in PEEK film
Sakamoto,W. K.
dielectric loss
thermally stimulated discharge current
polymer
activation energy
glass transition temperature
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
author Sakamoto,W. K.
author_facet Sakamoto,W. K.
author_role author
dc.contributor.author.fl_str_mv Sakamoto,W. K.
dc.subject.por.fl_str_mv dielectric loss
thermally stimulated discharge current
polymer
activation energy
glass transition temperature
topic dielectric loss
thermally stimulated discharge current
polymer
activation energy
glass transition temperature
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 (Tg) 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.
publishDate 2003
dc.date.none.fl_str_mv 2003-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/report
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format report
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702003000200006
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702003000200006
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0100-46702003000200006
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP
publisher.none.fl_str_mv Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP
dc.source.none.fl_str_mv Eclética Química v.28 n.2 2003
reponame:Eclética Química
instname:Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Eclética Química
collection Eclética Química
repository.name.fl_str_mv Eclética Química - Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)
repository.mail.fl_str_mv ecletica@ctrlk.com.br||ecletica@iq.unesp.br
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