A CaCO₃/nanocellulose-based bioinspired nacre-like material
Farhadi-Khouzani, Masoud (Universität Konstanz. Department of Chemistry)
Schütz, Christina (Stockholms universitet. Department of Materials and Environmental Chemistry)
Durak, Grażyna M. (Universität Konstanz. Department of Chemistry)
Fornell Beringues, Jordina (Universitat Autònoma de Barcelona. Departament de Física)
Sort Viñas, Jordi (Institució Catalana de Recerca i Estudis Avançats)
Salazar-Alvarez, Germán (Stockholms universitet. Department of Materials and Environmental Chemistry)
Bergström, Lennart (Stockholms universitet. Department of Materials and Environmental Chemistry)
Gebauer, Denis (Universität Konstanz. Department of Chemistry)

Date:	2017
Abstract:	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.
Grants:	Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1015
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	Journal of materials chemistry, Vol. 5, Issue 31 (August 2017) , p. 16128-16133, ISSN 2050-7496

DOI: 10.1039/C6TA09524K

6 p, 600.9 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Group of Smart Nanoengineered Materials, Nanomechanics and Nanomagnetism (Gnm3)
Articles > Research articles
Articles > Published articles