Enhancing the compatibility of low-value multilayer plastic waste in bitumen mixtures using atmospheric cold plasma and thermal oxidation
| Autor: | Adam Febriyanto Nugraha, Calvin Simon Andreas Lumban Gaol, Mochamad Chalid, Gusaimas Matahachiro Hanggoro Himawan Akbar, Havid Aqoma |
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| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Advanced Manufacturing: Polymer & Composites Science, Vol 10, Iss 1 (2024) |
| Druh dokumentu: | article |
| ISSN: | 20550340 2055-0359 2055-0340 |
| DOI: | 10.1080/20550340.2024.2375929 |
| Popis: | Multilayer plastic (MP) commonly used in food and beverage packaging is difficult to recycle due to its layered structure, resulting in its accumulation over time; the consequent environmental harm is further exacerbated by its short lifespan. This study investigates recycled low-value MP as a modifier for polymer-modified bitumen (PMB). However, the difference in polarity between MP and PMB mixtures is a challenge, resulting in their poor compatibility and reduced mechanical properties. To overcome this, low-value MP was treated with atmospheric cold plasma and thermal oxidation to enhance its compatibility with PMB. The results indicate that plasma and thermal treatments increase the hydrophilicity of low-value MP through the formation of low-molecular-weight oxidized molecules containing hydrophilic hydroxyl (–OH) and carbonyl (C = O) groups that act as an intermediary boundary layer between the low-value MP and asphaltene-rich bitumen. Further, the optimal oxidation conditions for MP are revealed as 60 s of plasma treatment followed by heating at 150 °C for 60 min. Mixtures of PMB and optimally oxidized MP have optimal compositions of 1 wt.%, with ductility and penetration values of 87.7 cm and 57.4 mm, respectively. |
| Databáze: | Directory of Open Access Journals |
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