Tough and Conductive Nacre‐inspired MXene/Epoxy Layered Bulk Nanocomposites

A long‐standing quest in materials science has been the development of tough epoxy resin nanocomposites for use in numerous applications. Inspired by nacre, here we report tough and conductive MXene/epoxy layered bulk nanocomposites. The orientation of MXene lamellar scaffolds is enhanced by anneali...

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Published in:Angewandte Chemie International Edition 2023-02, Vol.62 (9), p.e202216874-n/a
Main Authors: Wang, Huagao, Lu, Rongjian, Yan, Jia, Peng, Jingsong, Tomsia, Antoni P., Liang, Rui, Sun, Guoxing, Liu, Mingjie, Jiang, Lei, Cheng, Qunfeng
Format: Article
Language:English
Subjects:
Bulk Nanocomposites
Calcium carbonate
Chemical modification
Electrical Conductivity
Electrical resistivity
Electromagnetic interference
Electromagnetic shielding
Epoxy
Epoxy resins
Fracture toughness
Interlayers
Materials science
Mechanical Properties
MXene
MXenes
Nacre
Nanocomposites
Scaffolds
Structural integrity
Synergistic effect
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Summary:A long‐standing quest in materials science has been the development of tough epoxy resin nanocomposites for use in numerous applications. Inspired by nacre, here we report tough and conductive MXene/epoxy layered bulk nanocomposites. The orientation of MXene lamellar scaffolds is enhanced by annealing treatment. The improved interfacial interactions between MXene lamellar scaffold and epoxy through surface chemical modification resulted in a synergistic effect. Tailoring the interlayer spacing of MXene nanosheets to a critical distance resulted in a fracture toughness about eight times higher than that of pure epoxy, surpassing other epoxy nanocomposites. Our nacre‐inspired MXene/epoxy layered bulk nanocomposites also show high electrical conductivity that provides self‐monitoring capability for structural integrity and exhibits an excellent electromagnetic interference shielding efficiency. Our proposed strategy provides an avenue for fabricating high‐performance epoxy nanocomposites. Natural nacre provides an inspiration for fabricating tough and conductive MXene/epoxy layered bulk nanocomposites through strong interfacial interactions between MXene and epoxy resin. The resultant conductive nacre‐like layered bulk nanocomposites show self‐monitoring of the structural integrity and outstanding electromagnetic interference shielding.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.202216874