Interaction of polyaniline film with dibutyl phosphonate versus phosphite: Enhanced thermal stability

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F16%3A00465480" target="_blank" >RIV/61389013:_____/16:00465480 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.polymdegradstab.2016.11.005" target="_blank" >http://dx.doi.org/10.1016/j.polymdegradstab.2016.11.005</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.polymdegradstab.2016.11.005" target="_blank" >10.1016/j.polymdegradstab.2016.11.005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Interaction of polyaniline film with dibutyl phosphonate versus phosphite: Enhanced thermal stability

Popis výsledku v původním jazyce

Interaction between blue film of polyaniline base with dibutyl phosphonate yields green polyaniline film. This resembles the classical protonation of polyaniline base with acids but, in the contrast, there is no proton available in prevailing phosphonate tautomeric form. The character of interaction was studied by evolution of the infrared spectra of the film recorded during heating up to 200 °C. The experiments demonstrate that dibutyl phosphite, and not its phosphonate tautomeric form, interacts with polyaniline base. Above 140 °C, the original polyaniline base is recovered in dry air purged environment in spectrometer. The interaction with polyaniline base prevents dibutyl phosphite from the oxidation into dibutyl phosphate which occurs in case of heating of neat dibutyl phosphite, in which phosphonate form predominates. The thermal stability and the changes in molecular structure have been assessed by UV–visible, FTIR and Raman spectra. The model of the interaction based on the quantum-chemical optimization of the idealized structure is proposed.

Název v anglickém jazyce

Interaction of polyaniline film with dibutyl phosphonate versus phosphite: Enhanced thermal stability

Popis výsledku anglicky

Interaction between blue film of polyaniline base with dibutyl phosphonate yields green polyaniline film. This resembles the classical protonation of polyaniline base with acids but, in the contrast, there is no proton available in prevailing phosphonate tautomeric form. The character of interaction was studied by evolution of the infrared spectra of the film recorded during heating up to 200 °C. The experiments demonstrate that dibutyl phosphite, and not its phosphonate tautomeric form, interacts with polyaniline base. Above 140 °C, the original polyaniline base is recovered in dry air purged environment in spectrometer. The interaction with polyaniline base prevents dibutyl phosphite from the oxidation into dibutyl phosphate which occurs in case of heating of neat dibutyl phosphite, in which phosphonate form predominates. The thermal stability and the changes in molecular structure have been assessed by UV–visible, FTIR and Raman spectra. The model of the interaction based on the quantum-chemical optimization of the idealized structure is proposed.

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/GA16-02787S" target="_blank" >GA16-02787S: Vodivé polymerní kryogely</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

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

—

Svazek periodika

134

Číslo periodika v rámci svazku

December

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

357-365

Kód UT WoS článku

000390718700040

EID výsledku v databázi Scopus

2-s2.0-84994802192