Fig. 3
From: Packaging materials with desired mechanical and barrier properties and full chemical recyclability

Chemical recyclability of copolymers. a Closed loop of chemically recyclable polymers. b 1H NMR spectra (C7D8) of starting γBL (top) and T6HP (second from top) comonomers as comparison, a mixture of the recycled comonomers after depolymerization (third from top), and the copolymer (27% γBL incorporation) before chemolysis (bottom)