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Nacre-inspired Hard and Tough Materials

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Abstract: Nature fabricates materials with properties that are difficult to reproduce with manmade counterparts. For example, nacre, composed of layers of CaCO3 crystals that are interspaced with small quantities of organic components, is one of the toughest known biomaterials. To produce materials with such fascinating proper- ties, nature has established processes that offer an excellent control over their structure and local composition. Inspired by nacre, a lot of work has been devoted to the fabrication and characterization of composites with similar structures that nevertheless display distinctly different mechanical properties. The first part of this review summarizes methods used to produce nacre-inspired layered composites, their influence on the composition, structure, and mechanical properties. A key difference between the formation of nacre and that of nacre-inspired materials is the mechanism and kinetics of the formation of the inorganic components. In an endeavor to gain a better control over the mechanical properties of the inorganic platelets contained in nacre-inspired composites, the second part of this review describes methods to control the shape, structure, and orientation of CaCO3 formed in organic scaffolds.
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Keywords: CACO3; COMPOSITES; LAYERED COMPOSITES; NACRE; NACRE-INSPIRED MATERIALS

Document Type: Research Article

Publication date: February 1, 2019

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  • International Journal for Chemistry and Official Membership Journal of the Swiss Chemical Society (SCS) and its Divisions

    CHIMIA, a scientific journal for chemistry in the broadest sense, is published 10 times a year and covers the interests of a wide and diverse readership. Contributions from all fields of chemistry and related areas are considered for publication in the form of Review Articles and Notes. A characteristic feature of CHIMIA are the thematic issues, each devoted to an area of great current significance.

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