Nanoasperity: structure origin of nacre-inspired nanocomposites

Shuang Xia, Zuoning Wang, Hong Chen, Wenxin Fu, Jianfeng Wang, Zhibo Li, Lei Jiang

Research output: Contribution to journalArticleResearchpeer-review

51 Citations (Scopus)

Abstract

Natural nacre with superior mechanical property is generally attributed to the layered "brick-and-mortar" nanostructure. However, the role of nanograins on the hard aragonite platelets, which is so-called nanoasperity, is rarely addressed. Herein, we prepared silica platelets with aragonite-like nanoasperities via biomineralization strategy and investigated the effects of nanoasperity on the mechanical properties of resulting layered nanocomposites composed of roughened silica platelets and poly(vinyl alcohol). The tensile deformation behavior of the nanocomposites demonstrates that nanograins on silica platelets are responsive for strain hardening, improved strength, and toughness. The structure origin is attributed to the nanoasperity-controlled platelet sliding.

Original languageEnglish
Pages (from-to)2167-2172
Number of pages6
JournalACS Nano
Volume9
Issue number2
DOIs
Publication statusPublished - 24 Feb 2015
Externally publishedYes

Keywords

  • Bioinspired materials
  • Biomineralization
  • Hierarchical structure
  • Nacre
  • Nanoasperities

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