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; Xiwei Xu; Binbo Wang; Na Lu; Yanlin Liu; Jin Zhu

doi:10.1039/D0GC04337K

Upcycling of post-consumer polyolefin plastics to covalent adaptable networks via in situ continuous extrusion cross-linking†

Sheng Wang,^ab Songqi Ma,

*^a Jianfan Qiu,^ab Anping Tian,^a Qiong Li,^ab Xiwei Xu,^ab Binbo Wang,^a Na Lu,^ab Yanlin Liu^a and Jin Zhu*^a

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* Corresponding authors

^a Key laboratory of bio-based polymeric materials technology and application of Zhejiang province, Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. China
E-mail: masongqi@nimte.ac.cn, jzhu@nimte.ac.cn
Tel: +86-574-87619806

^b University of Chinese Academy of Sciences, Beijing 100049, P. R. China

Abstract

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.

Green Chemistry

Upcycling of post-consumer polyolefin plastics to covalent adaptable networks via in situ continuous extrusion cross-linking†

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Upcycling of post-consumer polyolefin plastics to covalent adaptable networks via in situ continuous extrusion cross-linking

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