| 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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Verho, Tuukka
VTT Technical Research Centre of Finland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2025A skeletonization-based approach for individual fiber separation in tomography images of biocomposites
- 2023Vibrations of Thin Bio Composite Plates
- 2022Biocomposite modeling by tomographic feature extraction and synthetic microstructure reconstructioncitations
- 2021Micromechanical performance of high-density polyethylene:experimental and modeling approaches for HDPE and its alumina-nanocompositescitations
- 2021Micromechanical performance of high-density polyethylenecitations
- 2019Matrix morphology and the particle dispersion in HDPE nanocomposites with enhanced wear resistancecitations
- 2018Crystal Growth in Polyethylene by Molecular Dynamics:The Crystal Edge and Lamellar Thicknesscitations
- 2018Crystal Growth in Polyethylene by Molecular Dynamicscitations
- 2018Imaging Inelastic Fracture Processes in Biomimetic Nanocomposites and Nacre by Laser Speckle for Better Toughnesscitations
- 2017Toughness and Flaw Tolerance by Biologically Inspired Approaches ; Sitkeitä rakennemateriaaleja luontoa jäljitellencitations
- 2017Micromechanical modeling of failure behavior of metallic materialscitations
- 2017Toughness and Fracture Properties in Nacre-Mimetic Clay/Polymer Nanocompositescitations
- 2015Fabrication of graphene-based 3D structures by stereolithographycitations
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