Closed‐Loop Recyclable Poly(ester‐disulfide)s for Potential Alternatives to Engineering Plastic

Author:

Chen Meng1,Yang Rulin1,Wu Huiping1,Wang Qian1,Shi Chenyu1,Zhou Shang‐Wu1,Yang Ding1,Liu Fang‐Yu1,Tian He1,Qu Da‐Hui1ORCID

Affiliation:

1. East China University of Science and Technology Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology and Dynamic Chemistry Institute of Fine Chemicals School of Chemistry and Molecular Engineering 130 Meilong Road Shanghai 200237 China

Abstract

AbstractFacile fabrication, low material complexity and closed‐loop recycling are essential for polymer plastics to alter their linear product economy towards a cradle‐to‐cradle one. Covalent adaptable networks (CANs) are one way to achieve that, which intrinsically exhibit decent mechanical properties like the thermosets but could also be easily recycled like the thermoplastics. In this work, we introduce rigid ester structural motifs into dynamic poly(disulfide)s to form a series of dual polymer networks. Owning to the coherence of soft/rigid segments and the reversible sacrificial crosslinking, they exhibit tailorable mechanical properties and good resistance towards different chemicals. Their closed‐loop recycling is achieved via mild solvolysis, maintaining materials’ mechanical integrities. It offers a solution as a sustainable replacement for engineering plastics which are massively under production but hard to be recycled.

Funder

National Natural Science Foundation of China

Science and Technology Commission of Shanghai Municipality

Publisher

Wiley

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