The article presents a novel approach to recycling poly(methyl methacrylate) (PMMA) by incorporating a minimal amount of α-methylstyrene (AMS) analogue into the polymer structure. This method, referred to as "doping," preserves the essential mechanical strength and optical clarity of PMMA while enhancing its thermal and catalyst-free depolymerization efficiency. The resulting copolymer, P(MMA-co-AMS), can be depolymerized at temperatures as low as 150 °C, significantly lower than current industrial standards, and yields high purity methyl methacrylate (MMA). The low recovery temperature allows for the isolation of pure MMA from a mixture of common plastics. The study demonstrates that the presence of weak bonds introduced by AMS facilitates main-chain scission, leading to efficient depolymerization. The method is suitable for bulk synthesis and does not require precious metals or specific end-groups, making it a promising step towards a circular economy.The article presents a novel approach to recycling poly(methyl methacrylate) (PMMA) by incorporating a minimal amount of α-methylstyrene (AMS) analogue into the polymer structure. This method, referred to as "doping," preserves the essential mechanical strength and optical clarity of PMMA while enhancing its thermal and catalyst-free depolymerization efficiency. The resulting copolymer, P(MMA-co-AMS), can be depolymerized at temperatures as low as 150 °C, significantly lower than current industrial standards, and yields high purity methyl methacrylate (MMA). The low recovery temperature allows for the isolation of pure MMA from a mixture of common plastics. The study demonstrates that the presence of weak bonds introduced by AMS facilitates main-chain scission, leading to efficient depolymerization. The method is suitable for bulk synthesis and does not require precious metals or specific end-groups, making it a promising step towards a circular economy.