Multiscale structure of nacre biomaterial: Thermomechanical behavior and wear processes.

Sheet nacre is a hybrid biocomposite with a multiscale structure, including nanograins of CaCO (97% wt% - 40 nm in size) and two organic matrices: (i) the interlamellar mainly composed of β-chitin and proteins, and (ii) the intracrystalline composed by silk-fibroin-like proteins. This material is currently contemplated for the manufacture of small prostheses (e.g.

Multiscale structure of sheet nacre.

This work was conducted on Pinctada maxima nacre (mother of pearl) in order to understand its multiscale ordering and the role of the organic matrix in its structure. Intermittent-contact atomic force microscopy with phase detection imaging reveals a nanostructure within the tablet. A continuous organic framework divides each tablet into nanograins.