Kinetics of the thermal degradation of polyethylene terephthalate

The chemistry, manufacture and tensile behaviour of polyester fibers

“…Acetaldehyde is always produced during the thermal degradation of PET at over 250 °C [19]. Jenekhe and Lin [223] carried out the pyrolysis of PET films in the temperature range of 250-600 °C. They considered a one-step decomposition reaction with a first order kinetic process.…”

Kinetic study of polyethylene terephthalate (PET) pyrolysis in a spouted bed reactor

“…Fig. 9 shows an Arrhenius-type representation where the kinetic constants determined in this study, using a spouted bed and TGA analysis, along with those previously obtained by means of thermogravimetry under both isothermal and dynamic conditions [1,3,[7][8][9]22]. The values for kinetic parameters available in the literature are different from those presented in this work due to the difference between operating conditions applied.…”

“…The values for activation energy of the process vary from 161 kJ/mol in isothermal TGA, performed by Encinar and Gonzalez [7] to 322 kJ/mol in dynamic TGA, performed by Saha and Goshal [3]. Certain authors [1,3,7,8,22] presented an average value of about 240 kJ/mol. There is a good agreement between the values for activation energy obtained in this study with those reported by the referred authors.…”

Pyrolysis kinetic modelling of abundant plastic waste (PET) and in-situ emissions monitoring

“…The differential iso-conversional method also was used to calculate the kinetic parameters (Ea along with the pre-exponential factor (k o )) using the AKTS software by plotting of the natural logarithm of the reaction rate in (s -1 ) against the inverse of the temperature (T -1 ) as shown in Figure 4 (a). In Figure 4 kJ.mol -1 using the iso-conversional method [37]. At the start of the PET pyrolysis reaction where α=0, the activation energy was 165 kJ.mol -1 .…”