Strong and Tough Layered Nanocomposites with Buried Interfaces
| Autor: | Hewei Zhao, Ke Chen, Lin Guo, Xuke Tang, Yonghai Yue |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Nanocomposite Materials science Graphene General Engineering Oxide General Physics and Astronomy Nanotechnology 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Toughening 0104 chemical sciences law.invention chemistry.chemical_compound chemistry law General Materials Science 0210 nano-technology |
| Zdroj: | ACS Nano. 10:4816-4827 |
| ISSN: | 1936-086X 1936-0851 |
| DOI: | 10.1021/acsnano.6b01752 |
| Popis: | In nacre, the excellent mechanical properties of materials are highly dependent on their intricate hierarchical structures. However, strengthening and toughening effects induced by the buried inorganic-organic interfaces actually originate from various minerals/ions with small amounts, and have not drawn enough attention yet. Herein, we present a typical class of artificial nacres, fabricated by graphene oxide (GO) nanosheets, carboxymethylcellulose (CMC) polymer, and multivalent cationic (M(n+)) ions, in which the M(n+) ions cross-linking with plenty of oxygen-containing groups serve as the reinforcing "evocator", working together with other cooperative interactions (e.g., hydrogen (H)-bonding) to strengthen the GO/CMC interfaces. When compared with the pristine GO/CMC paper, the cross-linking strategies dramatically reinforce the mechanical properties of our artificial nacres. This special reinforcing effect opens a promising route to strengthen and toughen materials to be applied in aerospace, tissue engineering, and wearable electronic devices, which also has implication for better understanding of the role of these minerals/ions in natural materials for the mechanical improvement. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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