Reprotonated polyanilines: The stability of conductivity at elevated temperature

Kód výsledku v IS VaVaI

RIV/00216208:11320/14:10282222 - isvavai.cz

Nalezeny alternativní kódy

RIV/61389013:_____/14:00427361

Výsledek na webu

http://dx.doi.org/10.1016/j.polymdegradstab.2014.02.001

DOI - Digital Object Identifier

10.1016/j.polymdegradstab.2014.02.001

Jazyk výsledku

angličtina

Název v původním jazyce

Reprotonated polyanilines: The stability of conductivity at elevated temperature

Popis výsledku v původním jazyce

Reprotonation of polyaniline base with various acids opens a way to conducting materials widely differing in physical properties. The thermal stability of the resulting polyaniline salts was tested by measurements of the conductivity at 125 degrees C forup to 500 h. Polyaniline sulfate was the most stable and its resistivity increased only by 3.6 times after that time. The stability differed considerably depending on the acid used for reprotonation. The room-temperature conductivity of polyaniline saltis determined by the strength of the acid and its ionic bond with the imine nitrogen in polyaniline. The thermal stability of conductivity, however, is controlled by the ability of the acid to constitute hydrogen bonds with the secondary amine nitrogensin polyaniline. For that reason, oxygen-containing counter-ions, such as sulfates or sulfonates, produce more stable salts with polyaniline, compared with polyaniline protonated with, e.g., hydrochloric acid. The presence of hydroxyl gro

Název v anglickém jazyce

Reprotonated polyanilines: The stability of conductivity at elevated temperature

Popis výsledku anglicky

Reprotonation of polyaniline base with various acids opens a way to conducting materials widely differing in physical properties. The thermal stability of the resulting polyaniline salts was tested by measurements of the conductivity at 125 degrees C forup to 500 h. Polyaniline sulfate was the most stable and its resistivity increased only by 3.6 times after that time. The stability differed considerably depending on the acid used for reprotonation. The room-temperature conductivity of polyaniline saltis determined by the strength of the acid and its ionic bond with the imine nitrogen in polyaniline. The thermal stability of conductivity, however, is controlled by the ability of the acid to constitute hydrogen bonds with the secondary amine nitrogensin polyaniline. For that reason, oxygen-containing counter-ions, such as sulfates or sulfonates, produce more stable salts with polyaniline, compared with polyaniline protonated with, e.g., hydrochloric acid. The presence of hydroxyl gro

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

GA13-00270S: Hybridní kompozity na bázi vodivých polymerů

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Polymer Degradation and Stability

ISSN

0141-3910

e-ISSN

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Svazek periodika

102

Číslo periodika v rámci svazku

April

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

67-73

Kód UT WoS článku

000335113100009

EID výsledku v databázi Scopus

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