Ultra-tough inverse artificial nacre based on epoxy-graphene by freeze-casting

Chuanjin Huang, Jingsong Peng, Sijie Wan, Yi Du, Shixue Dou, Hanoch Daniel Wagner, Antoni P. Tomsia, Lei Jiang, Qunfeng Cheng

Research output: Contribution to journalArticleResearchpeer-review

45 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)7636-7640
Number of pages5
JournalAngewandte Chemie - International Edition
Volume58
Issue number23
DOIs
Publication statusPublished - 3 Jun 2019
Externally publishedYes

Keywords

  • epoxy
  • fracture toughness
  • graphene
  • inverse artificial nacre
  • temperature sensing

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