Vliv elektrického pole na dipóly v polymerních kompozitech

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of electrical field on dipoles in polymer composites

Popis výsledku v původním jazyce

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...

Název v anglickém jazyce

Effect of electrical field on dipoles in polymer composites

Popis výsledku anglicky

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...

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BG - Jaderná, atomová a molekulová fyzika, urychlovače

OECD FORD obor

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Projekt

<a href="/cs/project/GA102%2F01%2F1324" target="_blank" >GA102/01/1324: Dielektrické a elektrické vlastnosti polymerních kompozitů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2004

Kód důvěrnosti údajů

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

Název periodika

Journal of Applied Polymer Science

ISSN

0021-8995

e-ISSN

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Svazek periodika

91

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

40-45

Kód UT WoS článku

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EID výsledku v databázi Scopus

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