Mineral-Enhanced Polyacrylic Acid Hydrogel as an Oyster-Inspired Organic–Inorganic Hybrid Adhesive
| Autor: | M. A. Cohen Stuart, Yunfei Jia, Yisheng Xu, Shengtong Sun, Helmut Cölfen, Ang Li, Xuhong Guo, Burcu Baykal Minsky, Regine von Klitzing |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Polyacrylic acid Nanoparticle 02 engineering and technology Adhesion 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Polyelectrolyte Amorphous calcium carbonate 0104 chemical sciences chemistry.chemical_compound Chemical engineering chemistry Biomimetic synthesis General Materials Science Adhesive 0210 nano-technology Curing (chemistry) |
| Zdroj: | ACS Applied Materials & Interfaces. 10:10471-10479 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.8b01082 |
| Popis: | Underwater adhesion is crucial to many marine life forms living a sedentary lifestyle. Amongst them, mussel adhesion has been mostly studied, which inspires numerous investigations of 3,4-dihydroxyphenylalanine (DOPA)-based organic adhesives. In contrast, reef-building oysters represent another important "inorganic" strategy of marine molluscs for adhesion by generating biomineralized organic-inorganic adhesives, which is still rarely studied and no synthetic analogues have ever been reported so far. Here, a novel type of oyster-inspired organic-inorganic adhesive based on a biomineralized polyelectrolyte hydrogel is reported, which consists of polyacrylic acid physically cross-linked by very small amorphous calcium carbonate nanoparticles (3 nm). The mineral-enhanced polyelectrolyte hydrogel adhesive is shown to be injectable, reusable, and optically clear upon curing in air. Moreover, comparable adhesion performance to DOPA-based adhesives is found for the hydrogel adhesive in both dry and wet conditions, which can even be further enhanced by introducing a small amount of second large cross-linker such as negatively charged nanoparticles. The present mineral hydrogel represents a new type of bio-inspired organic-inorganic adhesive that may find a variety of potential applications in adhesive chemistry. |
| Databáze: | OpenAIRE |
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