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Upcycling Of Post-consumer Polyolefin Plastics To Covalent Adaptable Networks Via In Situ Continuous Extrusion Cross-linking

Sheng Wang, Songqi Ma, Jianfan Qiu, Anping Tian, Qiong Li, Xi-wei Xu, Binbo Wang, Na Lu, Yanlin Liu, Jin Zhu
Published 2021 · Materials Science

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The huge amount of plastic waste is imperiling our daily life. Here, we designed a green and efficient large-scale one-pot method combining grafting and reversible cross-linking on a twin-screw extruder. Post-consumer plastic bags were upcycled to covalent adaptable networks (CANs) based on internally catalyzed anhydride monoester transesterification, and superior performance and reprocessability at elevated temperatures were achieved. This work provides a new idea for upcycling post-consumer polyolefin plastics, and the produced materials show great potential to be used at the industrial scale.
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