Chemical recycling, also known as depolymerization, involves breaking down polymeric waste into its monomers through chemical processes. For instance, polyester can be depolymerized back into its monomer, terephthalic acid and ethylene glycol, through processes such as glycolysis or hydrolysis. These monomers can then be used to synthesize new biodegradable polymer composites, either through polymerization or by blending with biodegradable polymers such as PLA or PHA .This method allows for a more controlled and high-quality recycling process, potentially yielding new, high-performance biodegradable composites suitable for various applications. However, chemical recycling requires more energy and complex infrastructure compared to mechanical recycling.