In-situ forming dynamic covalently crosslinked nanofibers with one-pot closed-loop recyclability

Sheng Wang, Nannan Wang, Dan Kai, Bofan Li (), Jing Wu, Jayven Chee Chuan Yeo, Xiwei Xu, Jin Zhu, Xian Jun Loh, Nikos Hadjichristidis () and Zibiao Li ()
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Sheng Wang: Energy and Environment (ISCE2), Agency for Science, Technology, and Research (A*STAR)
Nannan Wang: Energy and Environment (ISCE2), Agency for Science, Technology, and Research (A*STAR)
Dan Kai: Energy and Environment (ISCE2), Agency for Science, Technology, and Research (A*STAR)
Bofan Li: Energy and Environment (ISCE2), Agency for Science, Technology, and Research (A*STAR)
Jing Wu: Agency for Science, Technology, and Research (A*STAR)
Jayven Chee Chuan Yeo: Agency for Science, Technology, and Research (A*STAR)
Xiwei Xu: Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences (CAS)
Jin Zhu: Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences (CAS)
Xian Jun Loh: Agency for Science, Technology, and Research (A*STAR)
Nikos Hadjichristidis: Physical Sciences and Engineering Division, KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST)
Zibiao Li: Energy and Environment (ISCE2), Agency for Science, Technology, and Research (A*STAR)

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract Polymeric nanofibers are attractive nanomaterials owing to their high surface-area-to-volume ratio and superior flexibility. However, a difficult choice between durability and recyclability continues to hamper efforts to design new polymeric nanofibers. Herein, we integrate the concept of covalent adaptable networks (CANs) to produce a class of nanofibers ⎯ referred to dynamic covalently crosslinked nanofibers (DCCNFs) via electrospinning systems with viscosity modulation and in-situ crosslinking. The developed DCCNFs possess homogeneous morphology, flexibility, mechanical robustness, and creep resistance, as well as good thermal and solvent stability. Moreover, to solve the inevitable issues of performance degradation and crack of nanofibrous membranes, DCCNF membranes can be one-pot closed-loop recycled or welded through thermal-reversible Diels-Alder reaction. This study may unlock strategies to fabricate the next generation nanofibers with recyclable features and consistently high performance via dynamic covalent chemistry for intelligent and sustainable applications.

Date: 2023
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DOI: 10.1038/s41467-023-36709-4

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