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

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

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LI, 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. 10(12), pp. 10471-10479. ISSN 1944-8244. eISSN 1944-8252. Available under: doi: 10.1021/acsami.8b01082

@article{Li2018-03-28Miner-42298, title={Mineral-Enhanced Polyacrylic Acid Hydrogel as an Oyster-Inspired Organic–Inorganic Hybrid Adhesive}, year={2018}, doi={10.1021/acsami.8b01082}, 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} }

Sun, Shengtong Stuart, M. A. Cohen Li, Ang 2018-05-11T08:42:50Z 2018-05-11T08:42:50Z Xu, Yisheng Xu, Yisheng Jia, Yunfei Guo, Xuhong Li, Ang eng von Klitzing, Regine 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. Jia, Yunfei Cölfen, Helmut 2018-03-28 Sun, Shengtong von Klitzing, Regine Cölfen, Helmut Minsky, Burcu Baykal Minsky, Burcu Baykal Mineral-Enhanced Polyacrylic Acid Hydrogel as an Oyster-Inspired Organic–Inorganic Hybrid Adhesive Stuart, M. A. Cohen Guo, Xuhong

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