Upcycling of waste plastics and CO₂ for the production of materials and chemicals

Recycling of waste plastics and mitigating CO2 significantly contribute to combat the climate crisis while also generating economic value. This thesis focuses on separately accomplishing two parts, that is, the application of carbon nanotubes from chemical vapour deposition of waste plastics (pCNTs), as well as absorbing CO2 from flue gas and in-suit converted to syngas, which lay a foundation for capturing CO2 from pyrolysis gas products of waste plastics.

As major high-value solid products, carbon nanotubes produced from waste plastics were utilised as additives. The mechanical and thermal properties of pCNTs were systematically and comprehensively investigated by adding them to epoxy resin and phase change materials, respectively. The feasibility of pCNTs was verified through the comparative study of commercial carbon nanotubes.