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Study of the Thermal Pyrolysis of Packaging Materials by Derivatographic Methods

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Abstract:

This study aims to determine the key thermal parameters of plastic waste degradation, specifically polyethylene terephthalate (PET), polypropylene (PP), and polystyrene (PS), using differential scanning calorimetry (DSC), differential thermogravimetry (DTG), and thermogravimetric (TG) analysis. The thermal stability of these materials was evaluated by analyzing residual solid and wax quantities, conversion percentages, liquid and gas product yields, and process duration. Experiments were conducted at 550–600°C with a heating rate of 50°C/min. Key thermal parameters investigated include onset decomposition temperature, temperature at 50% conversion, completion temperature, maximum DTG temperature, peak DTG value, melting point, and pyrolysis temperature. The activation energy for mass loss was calculated, ranging from 35 to 68 kcal/mol, with PS exhibiting the highest thermal stability (68 kcal/mol). The degradation conversion efficiency ranged from 85% to 99%. Notably, PET pyrolysis produced significantly more solid residues (0.136–0.150 g/g₀) than PP and PS (0.006–0.088 g/g₀). These findings provide valuable insights into the thermal behavior of plastic waste, supporting advancements in waste management and energy recovery applications.

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Periodical:

Advanced Materials Research (Volume 1185)

Pages:

49-60

DOI:

https://doi.org/10.4028/p-dum8BD

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Online since:

December 2025

Authors:

Muslum Ahmed Gurbanov, Ulviye Aydin Guliyeva*, Elshen Valeh Mirzazada

Keywords:

DSC, DTG, Plastic Waste, Polyethylene Terephthalate (PET), Polypropylene (PP), Polystyrene (PS), Thermogravimetric (TG)

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© 2025 Trans Tech Publications Ltd. All Rights Reserved

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