Today, the pollution caused by plastics is undeniable, and the plastic industry is facing radical choices. One of these choices concerns the alternative between the increasing use of bio-based plastics or the recycling of petro-based plastics. Currently, in order to achieve the goal of a circular economy where plastics are recycled and reintegrated into the production process, the recycling of petro-based plastics is encouraged by regulations. Besides, bio-based plastics seem to offer considerable environmental advantages. However, the construction of a sustainable circular economy requires certain conditions to be met, such as the establishment of dedicated recycling chains, cost reduction, and "securing" the supply of raw materials.