Although mechanical recycling of plastics is the most favourable technology for the industry, it still has some limitations. For example, it may be difficult to convert PLA waste into useful products considering the previously mentioned reprocessing behaviour of PLA, especially thermomechanical degradation during extrusion. Therefore, after each cycle the product quality is lower compared with the starting material and thus its market value decreases [24] and [35]. On the other hand, maintaining the quality of the recyclate is vital for ensuring the feasibility of the process and the market value [36]. The mentioned facts regarding the difficulty of mechanical recycling of PLA, as well as the sensitivity of this recycling method to contamination, makes it useful for researchers to investigate the possibilities of chemical recycling. In chemical recycling, the polymer chain molecules are broken down into smaller hydrocarbon molecules (e.g., monomers), which are then fed into the polymerisation process. Regarding the energy balance as well as costs, these processes stand between pure remelting and combustion