Mineral-Enhanced Polyacrylic Acid Hydrogel as an Oyster-Inspired Organic–Inorganic Hybrid Adhesive

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2018
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Li, Ang
Jia, Yunfei
Xu, Yisheng
Minsky, Burcu Baykal
Stuart, M. A. Cohen
von Klitzing, Regine
Guo, Xuhong
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ACS Applied Materials & Interfaces. 2018, 10(12), pp. 10471-10479. ISSN 1944-8244. eISSN 1944-8252. Available under: doi: 10.1021/acsami.8b01082
Zusammenfassung

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.

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ISO 690LI, Ang, Yunfei JIA, Shengtong SUN, Yisheng XU, Burcu Baykal MINSKY, M. A. Cohen STUART, Helmut CÖLFEN, Regine VON KLITZING, Xuhong GUO, 2018. Mineral-Enhanced Polyacrylic Acid Hydrogel as an Oyster-Inspired Organic–Inorganic Hybrid Adhesive. In: ACS Applied Materials & Interfaces. 2018, 10(12), pp. 10471-10479. ISSN 1944-8244. eISSN 1944-8252. Available under: doi: 10.1021/acsami.8b01082
BibTex
@article{Li2018-03-28Miner-42298,
  year={2018},
  doi={10.1021/acsami.8b01082},
  title={Mineral-Enhanced Polyacrylic Acid Hydrogel as an Oyster-Inspired Organic–Inorganic Hybrid Adhesive},
  number={12},
  volume={10},
  issn={1944-8244},
  journal={ACS Applied Materials & Interfaces},
  pages={10471--10479},
  author={Li, Ang and Jia, Yunfei and Sun, Shengtong and Xu, Yisheng and Minsky, Burcu Baykal and Stuart, M. A. Cohen and Cölfen, Helmut and von Klitzing, Regine and Guo, Xuhong}
}
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