| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Kostiainen, Mauri A.
Aalto University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2025Mechanoenzymatic hydrolysis of cotton to cellulose nanocrystals
- 2023Potato virus A particles – A versatile material for self-assembled nanopatterned surfacescitations
- 2022Environment-Dependent Stability and Mechanical Properties of DNA Origami Six-Helix Bundles with Different Crossover Spacingscitations
- 2022Simultaneous Organic and Inorganic Host-Guest Chemistry within Pillararene-Protein Cage Frameworkscitations
- 2021Biotemplated Lithography of Inorganic Nanostructures (BLIN) for Versatile Patterning of Functional Materialscitations
- 2018Properties and chemical modifications of lignincitations
- 2017Nanometrology and super-resolution imaging with DNAcitations
- 2017Toughness and Fracture Properties in Nacre-Mimetic Clay/Polymer Nanocompositescitations
- 2017Adsorption of Proteins on Colloidal Lignin Particles for Advanced Biomaterialscitations
- 2016Metallic nanostructures based on DNA nanoshapescitations
- 2015Hierarchically Ordered Supramolecular Protein-Polymer Composites with Thermoresponsive Propertiescitations
Places of action
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article
Toughness and Fracture Properties in Nacre-Mimetic Clay/Polymer Nanocomposites
Abstract
| openaire: EC/FP7/291364/EU//MIMEFUN ; Nacre inspires researchers by combining stiffness with toughness by its unique microstructure of aligned aragonite platelets. This brick-and-mortar structure of reinforcing platelets separated with thin organic matrix has been replicated in numerous mimics that can be divided into two categories: microcomposites with aligned metal oxide microplatelets in polymer matrix, and nanocomposites with self-assembled nanoplatelets-usually clay or graphene oxide-and polymer. While microcomposites have shown exceptional fracture toughness, current fabrication methods have limited nacre-mimetic nanocomposites to thin films where fracture properties remained unexplored. Yet, fracture resistance is the defining property of nacre, therefore centrally important in any mimic. Furthermore, to make use of these properties in applications, bulk materials are required. Here, up to centimeter-thick nacre-mimetic clay/polymer nanocomposites are produced by the lamination of self-assembled films. The aligned clay nanoplatelets are separated by poly(vinyl alcohol) matrix, with 106-107 nanoplatelets on top of each other in the bulk plates. Fracture testing shows crack deflection and a fracture toughness of 3.4 MPa m1/2, not far from nacre. Flexural tests show high stiffness (25 GPa) and strength (220 MPa) that, despite the hydrophilic constituents, are not substantially affected by exposure to humidity. ; Peer reviewed