On the electrical conductivity of silver-content-controlled polyaniline-silver composites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F13%3A00428954" target="_blank" >RIV/61389013:_____/13:00428954 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.jnpn.org/03,09,03,03.html" target="_blank" >http://www.jnpn.org/03,09,03,03.html</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

On the electrical conductivity of silver-content-controlled polyaniline-silver composites

Popis výsledku v původním jazyce

Polyaniline?silver composites with variable content of silver (up to 30 vol.%) were produced by the oxidation of aniline with a mixture of two oxidants, silver nitrate and ammonium peroxydisulfate, in 1 M aqueous solution of methanesulfonic or acetic acid. The dependence of electrical conductivity on silver content is discussed in a framework of the percolation phenomenon with threshold between 21?24 vol.% for polyaniline salts and 25?27 vol.% for corresponding bases. Two different regions were found, semiconducting/insulating one for lower contents of silver, and metallic one, typical for silver-rich systems. Several transport mechanisms, such as the variable-range hopping, the charging-energy-limited tunnelling, the fluctuation-induced tunnelling, and Arrhenius activated transport were considered. The influence of doping acid, dynamic vacuum, and ageing on the electrical properties of composites was studied as well.

Název v anglickém jazyce

On the electrical conductivity of silver-content-controlled polyaniline-silver composites

Popis výsledku anglicky

Polyaniline?silver composites with variable content of silver (up to 30 vol.%) were produced by the oxidation of aniline with a mixture of two oxidants, silver nitrate and ammonium peroxydisulfate, in 1 M aqueous solution of methanesulfonic or acetic acid. The dependence of electrical conductivity on silver content is discussed in a framework of the percolation phenomenon with threshold between 21?24 vol.% for polyaniline salts and 25?27 vol.% for corresponding bases. Two different regions were found, semiconducting/insulating one for lower contents of silver, and metallic one, typical for silver-rich systems. Several transport mechanisms, such as the variable-range hopping, the charging-energy-limited tunnelling, the fluctuation-induced tunnelling, and Arrhenius activated transport were considered. The influence of doping acid, dynamic vacuum, and ageing on the electrical properties of composites was studied as well.

Druh

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

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

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Projekt

<a href="/cs/project/IAA400500905" target="_blank" >IAA400500905: Příprava a vlastnosti nanostruktur vytvářených vodivými polymery</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Journal of Nanostructured Polymers and Nanocomposites

ISSN

1790-4439

e-ISSN

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Svazek periodika

9

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GR - Řecká republika

Počet stran výsledku

8

Strana od-do

76-83

Kód UT WoS článku

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EID výsledku v databázi Scopus

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