Transforming Waste Polyvinyl Chloride into Strong Adhesives by NiCl ₂ ‐Catalyzed Amination at Near‐Ambient Temperature

Addressing the escalating global challenge of plastic waste management demands innovative solutions. While conventional recycling predominantly depolymerizes plastics into small‐molecule intermediates, direct, single‐step conversion of waste plastics into functional end‐products remains scarce. Herein, we reported a novel method for direct transformation of waste polyvinyl chloride (PVC) into high‐performance adhesives via NiCl 2 ‐catalyzed amination. This process substituted CCl bonds with ammonia, assisted by tributyl(cyanomethyl)phosphonium chloride (CTPC) under near‐ambient conditions. Adhesive performance directly correlated with PVC amination degree, semiquantitatively analyzed by 1 H NMR of modified PVC. Crucially, the resulting adhesive achieved >2000 kPa bonding strength—comparable to commercial cyanoacrylate adhesive (Model 502) under identical conditions—while exhibiting excellent environmental adaptability and flame retardancy. This approach offers significant advantages including single‐step simplicity and mild processing requirements. Most importantly, it bypasses traditional small‐molecule pathways, establishing a streamlined route for upcycling waste feedstock into practical adhesives.