Czasopismo
Tytuł artykułu
Autorzy
Warianty tytułu
Języki publikacji
Abstrakty
Polyphosphazenes represent a unique class of polymers with a backbone composed of alternating phosphorous and nitrogen atoms. The thermal behaviour and decomposition of a variety of polyphosphazenes depends on the type of side groups present. Especially those that bear aryloxy side groups, possess a high temperature stability as well as excellent flame resistance. Pyrolysis-capillary gas chromatography has been used in a study of three polyphosphazene samples for thermal stability characterisation. Degradation products were detected with three single detectors for flame ionisation (FID), nitrogen-phosphorous sensitivity (NPD) and mass spectrometry (MSD) at different pyrolysis temperatures ranging from 300°C up to 800°C. The NPD responses for phosphorous or nitrogen fragments of polyphosphazenes have been used for the construction of degradation product schemes and the examination of the thermal stability of the polyphosphazene’s backbone. Partial identification of the degradation products present in the gaseous phase was achieved by MSD. The polyphosphazenes thermal degradation conversion rates were at a maximum at 450–500°C. At various pyrolysis temperatures, the calculated N/P peak area ratio is a function of the degree of polyphosphazene-N=P-chain degradation, and reflective of the nitrogen - phosphorous detector sensitivity. NPD proved to be suitable tool for characterization of polyphospazene thermal stability.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Numer
Strony
271-290
Opis fizyczny
Daty
wydano
2007-03-01
online
2007-03-01
Twórcy
autor
- Institute of Inorganic and Analytical Chemistry, Westfälische Wilhelms-Universität Münster, D-48149, Münster, Germany
autor
- Institute of Inorganic and Analytical Chemistry, Westfälische Wilhelms-Universität Münster, D-48149, Münster, Germany
autor
- Faculty of Sciences, Department of Physical Chemistry, University of P.J.Šafárik, 04154, Košice, Slovakia
autor
- Faculty of Chemical Technology, Department of Organic Technology, Institute of Chemical Technology Prague, 16628, Prague 6 - Dejvice, Czech Republic
autor
- Faculty of Chemical Technology, Department of Organic Technology, Institute of Chemical Technology Prague, 16628, Prague 6 - Dejvice, Czech Republic
autor
- Institute for Energy, Directorate-General Joint Research Centre, European Commission, NL-1755 ZG, Petten, The Netherlands
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-006-0047-8