Vliv elektrického pole na dipóly v polymerních kompozitech

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F04%3A00011739" target="_blank" >RIV/60461373:22310/04:00011739 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of Electrical Field on Dipoles in Polymer

Popis výsledku v původním jazyce

Orientation of two bipolar compounds embeddedin polymer composites was studied. Poly(methylmethacrylate) (PMMA) dissolved in acetone was dopedwith a cobaltborane derivative of 1,2-dimethylimidazole andpolystyrene (PS) dissolved in toluene was doped withthe3-(1,2-dimethyl imidazole)-borane. To orient the dipoles, thecomposites were exposed to external electrical field: PMMAcomposite at the temperature of glass transition (Tg) and PScomposite during evaporation of the toluene solvent. Thedegree of dipoleorientation was estimated by the change inrelative permittivity ( ) of the resulting composite film. Thedependence of the on the temperature, frequency, voltage,and dipole concentration was studied. It was found that thedipole#s distribution in the composite .lm was not homogenous.At the Tg, the dipoles in PMMA became oriented byexternal direct electrical .eld and the orientation was conservedafter cooling to lower temperatures. In a PS-basedcomposite, the significant permittivity incre

Název v anglickém jazyce

Effect of Electrical Field on Dipoles in Polymer

Popis výsledku anglicky

Orientation of two bipolar compounds embeddedin polymer composites was studied. Poly(methylmethacrylate) (PMMA) dissolved in acetone was dopedwith a cobaltborane derivative of 1,2-dimethylimidazole andpolystyrene (PS) dissolved in toluene was doped withthe3-(1,2-dimethyl imidazole)-borane. To orient the dipoles, thecomposites were exposed to external electrical field: PMMAcomposite at the temperature of glass transition (Tg) and PScomposite during evaporation of the toluene solvent. Thedegree of dipoleorientation was estimated by the change inrelative permittivity ( ) of the resulting composite film. Thedependence of the on the temperature, frequency, voltage,and dipole concentration was studied. It was found that thedipole#s distribution in the composite .lm was not homogenous.At the Tg, the dipoles in PMMA became oriented byexternal direct electrical .eld and the orientation was conservedafter cooling to lower temperatures. In a PS-basedcomposite, the significant permittivity incre

Druh

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

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

—

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

—

Svazek periodika

neuveden

Číslo periodika v rámci svazku

91

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

40-45

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—