A new pyrolyzer for laser pyrolysis—gas chromatography/mass spectrometry experiments

Cecchetti, W.; Polloni, R.; Bergamasco, G.; Seraglia, Roberta; Catinella, Silvia; Cecchinato, Francesco; Traldi, Pietro

doi:10.1016/0165-2370(92)85004-5

Cited by 7 publications

(4 citation statements)

References 6 publications

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“…Other species were observed but not definitively identified. Table 3 is limited to those species previously report under helium pyrolysis [38–47].…”

Section: Resultsmentioning

confidence: 99%

“…Viton A, when heated at 350 °C for short times (0.2 min), produced no fluorinated fragments, but at that temperature for 5 min tetrafluoronaphthalene and trifluorobenzene were observed with many fragments containing the fragments F 2 C=CHCF 2 (m/z 113) and 163 (CF 3 )CF=CH(CF 2 ) [38][39][40][41][42]. At 700 more fluorinated decomposition species were seen.…”

Section: Pyrolysis Gc-msmentioning

confidence: 99%

“…Other species were observed but not definitively identified. Table 3 is limited to those species previously report under helium pyrolysis [38][39][40][41][42][43][44][45][46][47]. Kel-F was somewhat more liable than Viton A (Figure 9).…”

Section: Pyrolysis Gc-msmentioning

confidence: 99%

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Thermal decomposition of fluorinated polymers used in plasticized explosives and munitions

Kominia,

Smith,

Sheehan

et al. 2023

Propellants Explo Pyrotec

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A number of military explosives and munitions employ fluorinated polymers as binders or components, e. g., PBXN‐5. To determine potential environmental releases during disposal operations, the thermal decomposition of the fluorinated polymers Viton A, Kel‐F, and Teflon were examined alone and in combination with the explosive HMX. Although PBXN‐5 only contains 5 % by weight Viton A, laboratory prepared analogs were made with 5 % polymer as well as with 50 % polymer to ensure polymer decomposition products could be detected. Under air and under nitrogen decomposition was examined by SDT [simultaneous differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA)], TGA‐infrared (IR) spectrometry, and pyrolysis gas chromatography with mass spectrometric analysis (GC‐MS). All three techniques, SDT, TGA‐IR, and pyrolysis GC‐MS, suggest that decomposition of HMX could be completed at low temperature before polymer decomposition ensues. To confirm this observation, pyrolysis GC‐MS was performed at temperatures below 350 °C since above this temperature all three polymers exhibited some fluorinated decomposition products.

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“…Other species were observed but not definitively identified. Table 3 is limited to those species previously report under helium pyrolysis [38–47].…”

Section: Resultsmentioning

confidence: 99%

Section: Pyrolysis Gc-msmentioning

confidence: 99%

See 1 more Smart Citation

Thermal decomposition of fluorinated polymers used in plasticized explosives and munitions

Kominia,

Smith,

Sheehan

et al. 2023

Propellants Explo Pyrotec

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“…The most common pyrolysis techniques are indirect (evolved gas analysis), direct, flash, curie point and laser pyrolysis techniques. [1][2][3][4][5][6][7][8] Each pyrolysis technique has its own advantages and limitations. The main objective of this study was to investigate the applicability of a rapid pyrolysis technique for the thermal behavior of polymers.…”

mentioning

confidence: 99%

A rapid pyrolysis mass spectrometry technique for the study of polymers

Hacaloğlu

Ersen

1998

Rapid Commun. Mass Spectrom.

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Pyrolysis techniques coupled to mass spectrometers are used to investigate thermal stability, thermal degradation mechanisms and decomposition products of synthetic polymers. Each pyrolysis technique has its own advantages and limitations. The main objective of this study was to investigate the applicability of a rapid pyrolysis mass spectrometry technique for thermal analysis of polymers. For this purpose, thermal degradation of polymers, namely polystyrene, polybutadiene, styrene butadiene rubber, and styrenebutadiene-styrene block copolymer have been studied using a rapid pyrolysis mass spectrometry technique and results were compared with our previous data obtained using direct and indirect pyrolysis mass spectrometry techniques. Results indicate that not only the pyrolysis technique applied, but also the heating rate, affects thermal degradation as expected. It was also shown that the present rapid pyrolysis mass spectrometry system is a fast and powerful technique in investigating the thermal behavior of homopolymers, and of random and block copolymers. #

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