Synthetic nacre by predesigned matrix-directed mineralization

Although biomimetic designs are expected to play a key role in exploring future structural materials, facile fabrication of bulk biomimetic materials under ambient conditions remains a major challenge. Here, we describe a mesoscale "assembly-and-mineralization" approach inspired by the nat...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 2016-10, Vol.354 (6308), p.107-110
Hauptverfasser: Mao, Li-Bo, Gao, Huai-Ling, Yao, Hong-Bin, Liu, Lei, Cölfen, Helmut, Liu, Gang, Chen, Si-Ming, Li, Shi-Kuo, Yan, You-Xian, Liu, Yang-Yi, Yu, Shu-Hong
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Sprache:eng
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Zusammenfassung:Although biomimetic designs are expected to play a key role in exploring future structural materials, facile fabrication of bulk biomimetic materials under ambient conditions remains a major challenge. Here, we describe a mesoscale "assembly-and-mineralization" approach inspired by the natural process in mollusks to fabricate bulk synthetic nacre that highly resembles both the chemical composition and the hierarchical structure of natural nacre. The millimeter-thick synthetic nacre consists of alternating organic layers and aragonite platelet layers (91 weight percent) and exhibits good ultimate strength and fracture toughness. This predesigned matrix-directed mineralization method represents a rational strategy for the preparation of robust composite materials with hierarchically ordered structures, where various constituents are adaptable, including brittle and heat-labile materials.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.aaf8991