POS9-0173
Compatibilization of ELV derived Polypropylene and Crosslinked Polyurethane
When and Where
Nov 30, -0001
12:00am - 12:00am
Presenter(s)
Jisoo Han (Inha university)
Co-Author(s)
Abstract
Plastic waste pollution has become a critical global environmental issue, and the automotive industry has increasingly sought sustainable strategies for plastic recycling and incorporation of recycled feedstocks. Polypropylene (PP) and polyurethane (PU) account for a large fraction of automotive plastic wastes, making them important targets for recycling. However, thermoset PU used in car seat foams and urethane-based paints is difficult to reprocess due to its crosslinked structure and is challenging to recycle together with thermoplastic PP because of their different physicochemical properties. In this study, we report a reactive compatibilization strategy for PP/PU blends using telechelic oligomeric PP obtained from PP pyrolysis products as a compatibilizer. The addition of the compatibilizer improved the compatibility of PP with both linear thermoplastic PU and end-of-life vehicle (ELV) derived polyurethane foam (PUF) and urethane-based paint. The compatibilization effect was confirmed through enhanced mechanical performance, improved dispersion of the PU phase, and altered rheological and thermal properties of the PP/PU blends. This work demonstrates the potential of converting PP pyrolysis products into value-added compatibilizers and provides a promising strategy for the simultaneous recycling and upcycling of thermoplastic–thermoset mixed automotive plastic wastes.
