Broadband Dielectric Properties of Onion-Like Carbon/Polyurethane Composites Научная публикация
| Журнал |
Physica Status Solidi (A) Applications and Materials (after 2004)
ISSN: 1862-6300 , E-ISSN: 1862-6319 |
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| Вых. Данные | Год: 2013, Том: 210, Номер: 12, Страницы: 2683-2688 Страниц : 6 DOI: 10.1002/pssa.201330257 | ||||||
| Ключевые слова | PERCOLATION-THRESHOLD; RELAXATION | ||||||
| Авторы |
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| Организации |
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Информация о финансировании (1)
| 1 | European Commission |
Реферат:
The results of an investigation of the broadband dielectric properties of onion-like carbon (OLC)/polyurethane (PU) composites over a wide temperature range (300–450 K) are presented. The onset of the percolation threshold reached at 10 vol% of OLC is accompanied by drastically increased microwave absorption. The broadband dielectric properties of the composites at low loading of OLC, below the percolation threshold, are mainly governed by the α relaxation, the dynamics of the “soft” molecular segment of the PU chain. With increased OLC concentration, the glass-transition temperature decreases and the α relaxation completely vanishes for the composite with 5 vol% OLC. As the α relaxation vanishes rapid enhancement of the mobility of the soft molecular segments in PU chains occurs and a decrease of the activation energy of electrical conductivity follows.Keywords: composites; dielectric properties; onion-like carbon
Библиографическая ссылка:
Macutkevic J.
, Banys J.
, Kuznetsov V.
, Moseenkov S.
, Shenderova O.
Broadband Dielectric Properties of Onion-Like Carbon/Polyurethane Composites
Physica Status Solidi (A) Applications and Materials (after 2004). 2013. V.210. N12. P.2683-2688. DOI: 10.1002/pssa.201330257 WOS Scopus РИНЦ CAPlusCA OpenAlex
Broadband Dielectric Properties of Onion-Like Carbon/Polyurethane Composites
Physica Status Solidi (A) Applications and Materials (after 2004). 2013. V.210. N12. P.2683-2688. DOI: 10.1002/pssa.201330257 WOS Scopus РИНЦ CAPlusCA OpenAlex
Даты:
| Поступила в редакцию: | 28 авг. 2013 г. |
| Принята к публикации: | 11 сент. 2013 г. |
| Опубликована online: | 4 окт. 2013 г. |
| Опубликована в печати: | 1 дек. 2013 г. |
Идентификаторы БД:
| Web of science: | WOS:000328452500024 |
| Scopus: | 2-s2.0-84890432466 |
| РИНЦ: | 21466465 |
| Chemical Abstracts: | 2013:1608009 |
| Chemical Abstracts (print): | 160:496280 |
| OpenAlex: | W1585319542 |