Dielectric spectroscopy and thermally stimulated discharge current in PEEK film
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidade Estadual Paulista Júlio de Mesquita Filho
2003
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| _version_ | 1876482441495969792 |
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| author | W. K. Sakamoto |
| author_facet | W. K. Sakamoto |
| contents | Dielectric spectroscopy and thermally stimulated discharge current in PEEK film W. K. Sakamoto Química polymer dielectric loss activation energy glass transition temperature thermally stimulated discharge current The complex permittivity of films of polyether ether ketone (PEEK) has been investigatedover a wide range of frequency. There is no relaxation peak in the range of 1Hz to 105 Hz but in the lowfrequencyside (10-4 Hz) there is an evidence of a peak that also can be observed by thermally stimulateddischarge current measurements. That peak is related with the glass transition temperature (Tg) of thepolymer. The activation energy of the relaxation was found to be 0.44 eV, similar to that of severalsynthetic polymers. Space charges are important in the conduction mechanism as shown by dischargingtransient 2003 artículo científico 0100-4670 https://www.redalyc.org/articulo.oa?id=42928206 en http://www.redalyc.org/revista.oa?id=429 Eclética Química application/pdf Universidade Estadual Paulista Júlio de Mesquita Filho Eclética Química (Brasil) Num.2 Vol.28 |
| format | Artículo científico |
| id | redalyc_42928206 |
| institution | Redalyc |
| language | en |
| publishDate | 2003 |
| publisher | Universidade Estadual Paulista Júlio de Mesquita Filho |
| spellingShingle | Dielectric spectroscopy and thermally stimulated discharge current in PEEK film W. K. Sakamoto Química polymer dielectric loss activation energy glass transition temperature thermally stimulated discharge current Dielectric spectroscopy and thermally stimulated discharge current in PEEK film W. K. Sakamoto Química polymer dielectric loss activation energy glass transition temperature thermally stimulated discharge current The complex permittivity of films of polyether ether ketone (PEEK) has been investigatedover a wide range of frequency. There is no relaxation peak in the range of 1Hz to 105 Hz but in the lowfrequencyside (10-4 Hz) there is an evidence of a peak that also can be observed by thermally stimulateddischarge current measurements. That peak is related with the glass transition temperature (Tg) of thepolymer. The activation energy of the relaxation was found to be 0.44 eV, similar to that of severalsynthetic polymers. Space charges are important in the conduction mechanism as shown by dischargingtransient 2003 artículo científico 0100-4670 https://www.redalyc.org/articulo.oa?id=42928206 en http://www.redalyc.org/revista.oa?id=429 Eclética Química application/pdf Universidade Estadual Paulista Júlio de Mesquita Filho Eclética Química (Brasil) Num.2 Vol.28 |
| title | Dielectric spectroscopy and thermally stimulated discharge current in PEEK film |
| topic | Química polymer dielectric loss activation energy glass transition temperature thermally stimulated discharge current |
| url | https://www.redalyc.org/articulo.oa?id=42928206 |