Interaction of a phosphorus-based FR, a nanoclay and PA6. Part 2 interaction of the complete PA6 polymer nanocomposites

Alwar Ramani, Martin Hagen, Johan Hereid, Jianping Zhang, Michael Delichatsios

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Polyamide 6 (PA6) is modified with a nanoclay (NC), Cloisite 30B and/or a flame retardant (FR), OP1311. The thermal decomposition of pure PA6 and PA6 nanocomposites is done by thermogravimetric analysis (TGA). The decomposition products from TGA in nitrogen and air are analysed online by Fourier transform infrared (FTIR) spectroscopy in order to examine the time/temperature-dependent thermal degradation processes and monitor the evolved gases online. The profiles of the evolved gases are compared with epsilon-caprolactam spectra, which are the main species in the gas phase. Results show that the addition of the fire retardant decreases the degradation temperature, whereas the incorporation of NC (PA6+NC) contributes to increased residual mass and char formation. The evolved gases from TGA-FTIR in nitrogen from pure PA6 and (PA6+NC) are hydrocarbons, carbon dioxide, water, epsilon-caprolactam and ammonia. The (PA6+FR) and (PA6+NC+FR) evolve the same volatiles with an additional phosphorus-containing species, namely diethylphosphinic acid. The thermo-oxidative degradation of all these composites in air yields carbon monoxide with an increased production of carbon dioxide, water and hydrogen cyanide. Another important result is that the hydrogen cyanide does not increase when the phosphinate FR is used. Copyright (C) 2009 John Wiley & Sons, Ltd.
LanguageEnglish
Pages77-93
JournalFire and Materials
Volume34
Issue number2
DOIs
Publication statusPublished - Mar 2010

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polymer
phosphorus
cyanide
gas
degradation
carbon dioxide
hydrogen
thermal decomposition
nitrogen
air
FTIR spectroscopy
carbon monoxide
Fourier transform
ammonia
temperature
flame retardant
decomposition
hydrocarbon
water
acid

Cite this

Ramani, Alwar ; Hagen, Martin ; Hereid, Johan ; Zhang, Jianping ; Delichatsios, Michael. / Interaction of a phosphorus-based FR, a nanoclay and PA6. Part 2 interaction of the complete PA6 polymer nanocomposites. In: Fire and Materials. 2010 ; Vol. 34, No. 2. pp. 77-93.
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abstract = "Polyamide 6 (PA6) is modified with a nanoclay (NC), Cloisite 30B and/or a flame retardant (FR), OP1311. The thermal decomposition of pure PA6 and PA6 nanocomposites is done by thermogravimetric analysis (TGA). The decomposition products from TGA in nitrogen and air are analysed online by Fourier transform infrared (FTIR) spectroscopy in order to examine the time/temperature-dependent thermal degradation processes and monitor the evolved gases online. The profiles of the evolved gases are compared with epsilon-caprolactam spectra, which are the main species in the gas phase. Results show that the addition of the fire retardant decreases the degradation temperature, whereas the incorporation of NC (PA6+NC) contributes to increased residual mass and char formation. The evolved gases from TGA-FTIR in nitrogen from pure PA6 and (PA6+NC) are hydrocarbons, carbon dioxide, water, epsilon-caprolactam and ammonia. The (PA6+FR) and (PA6+NC+FR) evolve the same volatiles with an additional phosphorus-containing species, namely diethylphosphinic acid. The thermo-oxidative degradation of all these composites in air yields carbon monoxide with an increased production of carbon dioxide, water and hydrogen cyanide. Another important result is that the hydrogen cyanide does not increase when the phosphinate FR is used. Copyright (C) 2009 John Wiley & Sons, Ltd.",
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Interaction of a phosphorus-based FR, a nanoclay and PA6. Part 2 interaction of the complete PA6 polymer nanocomposites. / Ramani, Alwar; Hagen, Martin; Hereid, Johan; Zhang, Jianping; Delichatsios, Michael.

In: Fire and Materials, Vol. 34, No. 2, 03.2010, p. 77-93.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Interaction of a phosphorus-based FR, a nanoclay and PA6. Part 2 interaction of the complete PA6 polymer nanocomposites

AU - Ramani, Alwar

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AU - Delichatsios, Michael

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N2 - Polyamide 6 (PA6) is modified with a nanoclay (NC), Cloisite 30B and/or a flame retardant (FR), OP1311. The thermal decomposition of pure PA6 and PA6 nanocomposites is done by thermogravimetric analysis (TGA). The decomposition products from TGA in nitrogen and air are analysed online by Fourier transform infrared (FTIR) spectroscopy in order to examine the time/temperature-dependent thermal degradation processes and monitor the evolved gases online. The profiles of the evolved gases are compared with epsilon-caprolactam spectra, which are the main species in the gas phase. Results show that the addition of the fire retardant decreases the degradation temperature, whereas the incorporation of NC (PA6+NC) contributes to increased residual mass and char formation. The evolved gases from TGA-FTIR in nitrogen from pure PA6 and (PA6+NC) are hydrocarbons, carbon dioxide, water, epsilon-caprolactam and ammonia. The (PA6+FR) and (PA6+NC+FR) evolve the same volatiles with an additional phosphorus-containing species, namely diethylphosphinic acid. The thermo-oxidative degradation of all these composites in air yields carbon monoxide with an increased production of carbon dioxide, water and hydrogen cyanide. Another important result is that the hydrogen cyanide does not increase when the phosphinate FR is used. Copyright (C) 2009 John Wiley & Sons, Ltd.

AB - Polyamide 6 (PA6) is modified with a nanoclay (NC), Cloisite 30B and/or a flame retardant (FR), OP1311. The thermal decomposition of pure PA6 and PA6 nanocomposites is done by thermogravimetric analysis (TGA). The decomposition products from TGA in nitrogen and air are analysed online by Fourier transform infrared (FTIR) spectroscopy in order to examine the time/temperature-dependent thermal degradation processes and monitor the evolved gases online. The profiles of the evolved gases are compared with epsilon-caprolactam spectra, which are the main species in the gas phase. Results show that the addition of the fire retardant decreases the degradation temperature, whereas the incorporation of NC (PA6+NC) contributes to increased residual mass and char formation. The evolved gases from TGA-FTIR in nitrogen from pure PA6 and (PA6+NC) are hydrocarbons, carbon dioxide, water, epsilon-caprolactam and ammonia. The (PA6+FR) and (PA6+NC+FR) evolve the same volatiles with an additional phosphorus-containing species, namely diethylphosphinic acid. The thermo-oxidative degradation of all these composites in air yields carbon monoxide with an increased production of carbon dioxide, water and hydrogen cyanide. Another important result is that the hydrogen cyanide does not increase when the phosphinate FR is used. Copyright (C) 2009 John Wiley & Sons, Ltd.

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