Ultra-Tough Inverse Artificial Nacre Based on Epoxy-Graphene by Freeze-Casting



Publication Details

Huang, C., Peng, J., Wan, S., Du, Y., Dou, S., Wagner, H. Daniel., Tomsia, A. P., Jiang, L. & Cheng, Q. (2019). Ultra-Tough Inverse Artificial Nacre Based on Epoxy-Graphene by Freeze-Casting. Angewandte Chemie - International Edition, 58 (23), 7636-7640.


Epoxy nanocomposites combining high toughness with advantageous functional properties are needed in many fields. However, fabricating high-performance homogeneous epoxy nanocomposites with traditional methods remains a great challenge. Nacre with outstanding fracture toughness presents an ideal blueprint for the development of future epoxy nanocomposites. Now, high-performance epoxy-graphene layered nanocomposites were demonstrated with ultrahigh toughness and temperature-sensing properties. These nanocomposites are composed of ca. 99 wt % organic epoxy, which is in contrast to the composition of natural nacre (ca. 96 wt % inorganic aragonite). These nanocomposites are named an inverse artificial nacre. The fracture toughness reaches about 4.2 times higher than that of pure epoxy. The electrical resistance is temperature-sensitive and stable under various humidity conditions. This strategy opens an avenue for fabricating high-performance epoxy nanocomposites with functional properties.

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