Researcher(s)
- Meghana Akella, Chemistry, University of Delaware
Faculty Mentor(s)
- Srikanth Pilla, Center for Composite Materials, University of Delaware
- Kasturee Nayak, Center for Composite Materials, University of Delaware
Abstract
Despite the recyclability of polyethylene terephthalate (PET), only 28% of generated PET waste is recycled, highlighting the need for innovative solutions to mitigate plastic waste. This study synthesizes a novel non-isocyanate-based thermoplastic polyhydroxyl urethane (PHU) from PET waste, upcycling it into a valuable material with increased biocontent and sustainability through the incorporation of biobased amines. The three-step synthesis involves glycolysis of PET, cyclocarbonation, and PHU synthesis, with thorough characterization by ESI-MS, NMR, and FTIR spectroscopy. The resulting polymer exhibits thermoplastic behavior with a Tg below room temperature and stability up to 200°C, as well as chemical recyclability, making it an attractive material for various applications. Future studies aim to incorporate this polymer into fibers for composite materials and explore synthesizing different molecular weights of PHU, with potential applications in the automotive industry, packaging, and textiles. This innovative approach offers a promising solution for mitigating plastic waste, promoting sustainability, and reducing the environmental impact of PET production. By upcycling PET waste into a valuable material, this study contributes to a circular economy and highlights the potential for chemical recycling to transform post-consumer plastics into high-value products.