*3.1.1 Chemical recycling of polyester (PET)*

Commercially available chemical recycling options for polyester waste are [31, 56, 66, 69]:


Condition of the input material is important for chemical recycling of PET. When the input material is dyed, for example, decolorization and the removal of dyes require an additional step in the process. Plastic bottles from PET with high molecular weights can be successfully recycled by chemical processes. Even though recycling reduces the chain lengths, recycled materials have an average molecular weight high enough for fiber production [64].
