2026-04-14T03:06:13Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/4288252026-03-13T04:47:07Zcom_2072_98col_2072_378192

00925njm 22002777a 4500 dc Farhadi-Khouzani, Masoud author Schütz, Christina author Durak, Grażyna M. author Fornell Beringues, Jordina author Sort Viñas, Jordi author Salazar Álvarez, Germán author Bergström, Lennart author Gebauer, Denis author 2017 Nacre continues to be an inspiration for the fabrication of strong and tough materials from renewable and earth-abundant raw materials. Herein, we showed how a nacre-like hybrid material based on nanocellulose (NC) and CaCO₃ can be prepared via the sequential infiltration of polymer-stabilised CaCO₃ liquid precursors into layers of pre-deposited NC films. Layer-by-layer assembly of the NC films followed by controlled spreading and infiltration with liquid CaCO₃ precursors generated a lamellar material with an architecture and iridescent appearance similar to those of nacre. The wettability of the NC films towards the liquid CaCO₃ precursors was controlled by hydroxyl and carboxyl functionalization of the NC fibrils and the addition of magnesium ions. The combination of a high stiffness and plasticity of the nacre-like NC/CaCO₃ hybrid materials show that excellent mechanical properties can be obtained employing a fibrillar organic constituent that is relatively hard. The fabrication of a nacre-like hybrid material via an aqueous route of assembly and infiltration processing demonstrates how a sustainable composite material with outstanding properties can be produced using the most abundant biopolymer and biomineral on earth. A CaCO₃/nanocellulose-based bioinspired nacre-like material