Pyrolysis of the 3D printing plastic waste
Keywords:pyrolysis, plastic waste, 3D printing, thermogravimetry, heating rate
The amount of plastic waste generated by 3D printing is growing dramatically; thus, recycling is becoming increasingly vital. This research aims to investigate the potential of pyrolysis technology for the recycling of 3D printing plastic waste by employing thermogravimetric analysis. The pyrolysis of Polyethylene Terephthalate Glycol (PETG), Polylactic Acid (PLA), and Acrylonitrile Butadiene Styrene (ABS) was studied using three different heating rates of 5, 10, and 20 °C/min. As a result, all three materials showed one step of degradation based on thermogravimetric analyses. In addition, different mixtures were also investigated to see the influence of polymer combinations. The thermogravimetric analysis of the three heating rates described above demonstrated two stages of mixture decomposition in the presence of PLA. The findings suggest that the thermal behavior of a mixture, including mass loss and solid residue, can be estimated by calculating a weighted average of the solid residues of individual plastic waste components. This method provides a useful tool for predicting the thermal behavior of mixtures and can aid in the development of more efficient waste management strategies.
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