Journal
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 30, Issue 5, Pages 715-721Publisher
ELSEVIER
DOI: 10.1016/j.msec.2010.03.003
Keywords
Mother of pearl; Nanoindentation; AFM image analysis; Biocrystals; Aragonite platelets
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Sheet nacre is a nanocomposite with a multiscale structure displaying a lamellar bricks and mortar microarchitecture. In this latter, the brick refer to aragonite platelets and the mortar to a soft organic biopolymer. However, it appears that each brick is also a nanocomposite constituted as CaCO3 nanoparticles reinforced organic composite material. What is the role of this intracrystalline organic phase in the deformation of platelet? How does this nanostructure control the mechanical behaviour of sheet nacre at the macroscale? To answer these questions, the mechanical properties of each nanocomponents are successively investigated and computed using spherical and sharp nanoindentation tests combined with a structural model of the organomineral platelets built from AFM investigations. (c) 2010 Elsevier B.V. All rights reserved.
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