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(a) Probable mechanisms of degradation of PHBV; (b) schematic representation of the chain extension mechanism of polymers incorporated with JON [Redrawn with permission from Standau et al.14 Copyright 2021, Taylor and Francis (License no.: 5872110208913)]. The end group of the chain extender, JON, reacts with the reactive hydroxyl and carboxyl end groups of PHBV. This can help in the formation of the long-chain branching of PHBV.
