C–H Insertion Functionalization of Polyolefins for Versatile Polyolefin-Polyester Compatibilization

PP significantly improved the elongation at break, effectively restoring their material properties. This approach can be applied to prepare a compatibilizer from postconsumer HDPE bottlecaps. The waste derived compatibilizer effectively compatibilized postconsumer PET/HDPE blends, demonstrating the versatility of this method as a low-cost, efficient, and adaptable solution for restoring PET/polyolefin blend properties.