Thermal Decomposition Characteristics of Waste Plastics Used in Plastic Processing

초록

We investigated the pyrolysis of Acetal Resin (POM), Polyethylene (PE), and Polypropylene (PP) at 260.5°C and 290°C to assess the release of toxic byproducts as plastic waste production and disposal continue to rise. Using Gas Chromatography techniques, including Gas Chromatography-Mass Spectrometry (GC-MS) and Gas Chromatography-Flame Ionization Detection (GC-FID), we analyzed the emitted compounds. We calculated concentration ratios, revealing that in the GC-MS analysis, POM had the highest mean ratio of 3.3785, followed by PE at 0.4543 and PP at 2.4851. In the FID analysis, POM had the highest mean ratio of 1.3782, with PE at 0.8099 and PP at 1.5527. Our results demonstrate that temperature significantly influences the types and concentrations of released substances, with certain hazardous compounds showing a marked increase at higher temperatures. This study provides valuable insights into optimizing pyrolysis conditions and minimizing environmental risks associated with plastic waste processing. Future research will further enhance pyrolysis methodologies and contribute to the development of regulatory guidelines for safer applications.

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