Studies of the thermal degradation of polysulfones by filament-pulse pyrolysis—gas chromatography

Almén, Per; Ericsson, Ingvar

doi:10.1016/0141-3910(95)00169-7

Cited by 31 publications

(14 citation statements)

References 13 publications

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“…Thermal degradation of PES and kinetics of SO 2 formation have been studied by Almen and Ericsson. 16 The pyrolysis of PEEK to estimate the functional group stability and the identification of the evolved gases was studied by Perng et al 17 The present article describes the study of the effluent analysis and the effect of environment on the thermal degradation pattern, kinetic parameters, and lifetime estimation of PET, poly(ether sulfone) (PES), and poly-(ether ether ketone) (PEEK).…”

Section: Introductionmentioning

confidence: 99%

Thermal and thermooxidative degradation of engineering thermoplastics and life estimation

Gupta

Chakraborty

Pandey

et al. 2004

J of Applied Polymer Sci

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This investigation deals with the thermal or thermooxidative degradation behavior of three engineering polymers [e.g., poly(ethylene terephthalate) (PET), poly-(ether sulfone) (PES), and poly(ether ether ketone) (PEEK)] by using thermogravimetry-coupled mass spectrometry (TG-MS) analysis. The experiments were conducted both in argon and in air separately to study the changes in the degradation pattern of the polymers under varied sample environments. The samples were subjected to a programmed heating rate of 10°C/min and a temperature range from ambient to 800°C. For all these polymers, the decomposition rate, percentage weight loss, and the nature of the evolved gases were found to vary while changing the environment from argon to air. Methods of nonisothermal kinetic analysis, proposed by Flynn and Wall, and the shelf life estimation, proposed by Toop, have been described.

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Section: Introductionmentioning

confidence: 99%

Thermal and thermooxidative degradation of engineering thermoplastics and life estimation

Gupta

Chakraborty

Pandey

et al. 2004

J of Applied Polymer Sci

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“…). Pretreament did not alter the typical degradation pattern of PES, characterized by a single step related to chain random scission and carbonization to release SO 2 from the sulfone group and phenol from the ether group at the peak temperature . When comparing the effect of the pretreatment for each formulation, the only significant difference was related to the final mass loss, which was found to decrease for pretreated samples, as shown in Fig.…”

Section: Resultsmentioning

confidence: 84%

Effect of Pretreatment of Nanocomposite PES‐Fe₃O₄ Separator on Microbial Fuel Cells Performance

Bavasso

Palma

Puglia

et al. 2019

Polymer Engineering & Sci

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Nanocomposite membranes based on polyethersulfone (PES) and nanomagnetite have been investigated with regards to the effect of pretreatments on the electrochemical performance of microbial fuel cells (MFCs). Nanocomposite membranes containing various amounts of Fe 3 O 4 (5, 10, and 20 wt%) were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, differential scanning calorimetry, and tensile tests. The application in MFC systems requires also chemical characterizations such as ion exchange capacity, water uptake, and oxygen permeability. The best formulation (PES10) showed electrochemical properties similar to the PES20. With the aim of obtaining a highperformance membrane with a low filler dosage, a pretreatment procedure (1 h of boiling step in deionized water and 1 h of immersion in 0.5 M of H 2 SO 4 ) was adopted. The results of such pretreatment in terms of maximum power and current density were 10.59 AE 0.72 mW/m 2 and 52.07 AE 0.86 mA/m 2 , respectively. The adoption of a pretreatment avoids the need of higher amount of nanofillers that can affect membrane surface roughness and its processing. Overall, the nanocomposite membranes represent a suitable technology in the MFC process. POLYM. ENG. SCI., 60:371-379, 2020.POLYMER ENGINEERING AND SCIENCE-2020 FIG. 8. SEM micrographs at two image magnifications of the fouling layer on PES5 (a,b) and PES10 (c,d) membranes after 15-day operation of MFC.

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“…It should be noted that the characteristic spectra of phenol can originate from phenol, isopropylidene substituted phenols, or bisphenol A. The formation of phenol‐ and bisphenol‐A‐containing species was also described in the literature as determined by means of pyrolysis measurements 30,31…”

Section: Resultsmentioning

confidence: 97%

Novel Phosphorus‐Containing Poly(ether sulfone)s and Their Blends with an Epoxy Resin: Thermal Decomposition and Fire Retardancy

Braun

Knoll

Schartel

et al. 2006

Macro Chemistry & Physics

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Summary:The decomposition of novel phosphoruscontaining poly(oxyphenylene-sulfonyl-phenylene-oxydiphenyl phenylene phosphine oxide) (PSU_I), 2,5-dihydroxy-1-biphenylene-phosphine oxide based polysulfone (PSU_II), poly(sulfonyl-diphenylphenylene phosphonate) (PSU_P) and bisphenol A-based polysulfone (PSU) is studied. The influence of the chemical structure, charring and phosphorus release is discussed based on the mass loss, kinetics and products. The pyrolysis and fire behaviour of blends with epoxy resin (EP) are studied. For EP-PSU_II, phosphorus initiates water elimination and changes the decomposition pathway of EP. The fire behaviour of EP-PSU shows some improvements, whereas the heat release rate is crucially reduced for EP-PSU_II due to simultaneous char formation and flame inhibition.Decomposition model of PSU_II.

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Studies of the thermal degradation of polysulfones by filament-pulse pyrolysis—gas chromatography

Cited by 31 publications

References 13 publications

Thermal and thermooxidative degradation of engineering thermoplastics and life estimation

Thermal and thermooxidative degradation of engineering thermoplastics and life estimation

Effect of Pretreatment of Nanocomposite PES‐Fe₃O₄ Separator on Microbial Fuel Cells Performance

Novel Phosphorus‐Containing Poly(ether sulfone)s and Their Blends with an Epoxy Resin: Thermal Decomposition and Fire Retardancy

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Studies of the thermal degradation of polysulfones by filament-pulse pyrolysis—gas chromatography

Cited by 31 publications

References 13 publications

Thermal and thermooxidative degradation of engineering thermoplastics and life estimation

Thermal and thermooxidative degradation of engineering thermoplastics and life estimation

Effect of Pretreatment of Nanocomposite PES‐Fe3O4 Separator on Microbial Fuel Cells Performance

Novel Phosphorus‐Containing Poly(ether sulfone)s and Their Blends with an Epoxy Resin: Thermal Decomposition and Fire Retardancy

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Effect of Pretreatment of Nanocomposite PES‐Fe₃O₄ Separator on Microbial Fuel Cells Performance