Synthesis of New Functionalized Polymers Through the Post‐Modification of Polyvinyl Chloride

ABSTRACT Polyvinyl chloride (PVC) is one of the most widely used plastic materials worldwide, particularly in long‐life applications such as construction materials. However, recycling options for PVC waste remain limited, as conventional methods often degrade material quality or generate environmentally hazardous byproducts. In this study, we demonstrate an efficient process to convert PVC into new polymers with variable aromatic groups, using triethylsilane as the reductant in different solvents. This approach enables the production of polymers analogous to functionalized polyethylene (PE), which are typically challenging to obtain through conventional copolymerization or direct post‐modification of C‐H bonds in PE. The resulting polymers exhibit tunable thermal and mechanical properties depending on the introduced aromatic groups, which not only enhance the sustainable valorization of PVC waste, but also provide an opportunity for the synthesis of new functionalized polymers.