Thermal degradation of poly(phenylene sulfide) and perfluoropoly(phenylene sulfide)

Ndabula, Christopher; Cotter, John L.; Knight, G. J.; Wright, William W.

doi:10.1002/app.1968.070120421

Cited by 64 publications

(29 citation statements)

References 4 publications

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“…5) similar to that reported previously [8]. A sublimed portion (FTIR spectrum with prominent absorption at 3140, 3036 cm À1 (aromatic C-H stretch) and 1403 cm À1 (possibly C C and/ or thiophene ring stretch) that are of little diagnostic value) was produced together with a compact shiny black residue (for SEM image see Fig.…”

Section: Thermogravimetry Of Ppsmentioning

confidence: 81%

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IR laser ablative desulfurization of poly(1,4-phenylene sulfide)

Durani¹,

Khawaja²,

Masoudi³

et al. 2005

Journal of Analytical and Applied Pyrolysis

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Section: Thermogravimetry Of Ppsmentioning

confidence: 81%

“…Thermal behaviour of PPS studied by pyrolysis-mass spectroscopy/gas chromatography [2][3][4][5][6][7] and thermogravimetry [8,9] has revealed complex mechanism of PPS decomposition. It was proposed [5] that the heating of PPS to over 300 8C induces polymer branching, the heating to ca.…”

Section: Introductionmentioning

confidence: 99%

IR laser ablative desulfurization of poly(1,4-phenylene sulfide)

Durani¹,

Khawaja²,

Masoudi³

et al. 2005

Journal of Analytical and Applied Pyrolysis

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“…It is apparent that the activation energy values determined by the high-resolution TG in this article are much larger than those (170 -200 kJ/mol) determined by traditional TGs. 21,22 Most polymers contain weak bonds that are expected to break with a higher probability than other stronger bonds. When the thermal energy begins to surpass the bond energies of various bonds in the PPS chains, random chain scission takes place and the rate of degradation increases rapidly.…”

Section: Thermal Decomposition Kineticsmentioning

confidence: 99%

High‐resolution thermogravimetry of poly(phenylene sulfide) film under four atmospheres

Huang

Bai

2001

J of Applied Polymer Sci

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ABSTRACT:The thermal degradation of poly(phenylene sulfide) (PPS) film is investigated in air, nitrogen, helium, and argon with different physical and reactive characteristics at room temperature to 790°C as ascertained by high-resolution thermogravimetry (TG) at a variable heating rate in response to the changes in the sample's weight-loss rate. Only a one-step degradation process of the PPS is observed in nitrogen and argon, but a two-step degradation process of PPS is found in helium. A four-step degradation process of the PPS, which is hardly ever revealed by traditional TG, is found in this investigation, especially in air. The initial thermal degradation temperature and temperature at the first maximum weight-loss rate of the PPS increase in the following order: helium Ͻ nitrogen Ͻ argon Ͻ air. The first maximum weight-loss rate also increases with the variation of the atmosphere in the order nitrogen Ͻ air Ͻ argon Ͻ helium. The char yield at 700°C increases in the order air Ͻ helium Ͻ nitrogen Ͻ argon. The activation energy of the major degradation process of PPS, as calculated based on the high-resolution TG data, is very high and increases in the order nitrogen Ͻ argon Ͻ helium Ͻ air. The thermal decomposition parameters of the PPS determined by the high-resolution TG are systematically compared with those by traditional TG at a constant heating rate.

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