Chemical recycling of poly(butylene terephthalate) into value-added biodegradable poly(butylene adipate-co-terephthalate)

We present here a green and value-added method for the chemical recycling of postconsumer PBT, by its cyclodepolymerization into cyclic oligoesters (COBTs), which can be further polymerized with poly(butylene adipate) diols to biodegradable PBAT.