Biosourced Aromatic Derivatives in the Upcycling of Recycled PET: Mellophanic Dianhydride as a Chain Extender

The synthesis of mellophanic dianhydride (MEDA) from biosourced 1,2,3,4-benzene tetracarboxylic derivatives and its use as a chain extender for mechanically recycled PET (R-PET) an alternative to traditional oil-based pyromellitic (PMDA) is reported. rheological tests performed on the R-PET extruded with MEDA have shown similar results those obtained PMDA, dynamic mechanical thermal analysis (DMTA) showed that, in 90–110 °C range (i.e., temperature commonly used blow molding bottles), Young’s modulus containing about 20% higher comparison that pristine R-PET. advantage it can be prepared using building blocks agricultural waste via sustainable protocol, whereas PMDA product chemistry.