Effect of electrical field on dipoles in polymer composites

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F04%3A00101839" target="_blank" >RIV/61389005:_____/04:00101839 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Effect of electrical field on dipoles in polymer composites

Original language description

Orientation of two bipolar compounds embedded in polymer composites was studied. Poly(methyl methacrylate) (PMMA) dissolved in acetone was doped with a cobaltborane derivative of 1,2-dimethylimidazole and polystyrene (PS) dissolved in toluene was doped with the 3-(1,2-dimethyl imidazole)-borane. To orient the dipoles, the composites were exposed to external electrical field: PMMA composite at the temperature of glass transition (T-g) and PS composite during evaporation of the toluene solvent. The degreeof dipole orientation was estimated by the change in relative permittivity (epsilon) of the resulting composite film. The dependence of the epsilon on the temperature, frequency, voltage, and dipole concentration was studied. It was found that the dipole's distribution in the composite film was not homogenous. At the T-g, the dipoles in PMMA became oriented by external direct electrical field and the orientation was conserved after cooling to lower temperatures. In a PS-based composi...

Czech name

Vliv elektrického pole na dipóly v polymerních kompozitech

Czech description

Byla studována orientace dvou bipolárních sloučenin vložených v polymerním kompozitu. Stupeň dipólové orientace byl určen změnami relativní permitivity výsledného kompozitního filmu. Byla studována závislost na teplotě, frekvenci, napětí a koncentraci dipólů.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BG - Nuclear, atomic and molecular physics, accelerators

OECD FORD branch

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Project

<a href="/en/project/GA102%2F01%2F1324" target="_blank" >GA102/01/1324: Dielectrical and electrical properties of polymeric composites</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2004

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Applied Polymer Science

ISSN

0021-8995

e-ISSN

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Volume of the periodical

91

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

6

Pages from-to

40-45

UT code for WoS article

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EID of the result in the Scopus database

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