Closed‐Loop Recycling of Poly(Imine‐Carbonate) Derived from Plastic Waste and Bio‐based Resources

Closed-loop recycling of polymers represents the key technology to convert plastic waste in a sustainable fashion. Efficient chemical and upcycling strategies are thus highly sought-after establish circular economy. Here, we present selective depolymerization polycarbonate by employing vanillin derivative as bio-based feedstock. The resulting di-vanillin carbonate monomer was used combination with various amines construct library reprocessable poly(imine-carbonate)s, which show tailor-made thermal mechanical properties. These novel poly(imine-carbonate)s exhibit excellent recyclability under acidic energy-efficient conditions. This allows recovery monomers high yields purity for immediate reuse, even when mixed commodity plastics. work provides exciting new insights design produced minimal environmental impact.