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Mineral-Enhanced Polyacrylic Acid Hydrogel as an Oyster-Inspired Organic–Inorganic Hybrid Adhesive
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-03-08 00:00:00 , DOI: 10.1021/acsami.8b01082 Ang Li , Yunfei Jia , Shengtong Sun 1 , Yisheng Xu 2 , Burcu Baykal Minsky 3 , M. A. Cohen Stuart , Helmut Cölfen 4 , Regine von Klitzing 5 , Xuhong Guo 2
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-03-08 00:00:00 , DOI: 10.1021/acsami.8b01082 Ang Li , Yunfei Jia , Shengtong Sun 1 , Yisheng Xu 2 , Burcu Baykal Minsky 3 , M. A. Cohen Stuart , Helmut Cölfen 4 , Regine von Klitzing 5 , Xuhong Guo 2
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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.
中文翻译：
矿物增强的聚丙烯酸水凝胶，是牡蛎启发的有机-无机杂化胶
水下附着力对于许多久坐不动的海洋生物形式至关重要。其中，贻贝附着力研究最多，这激发了对基于3,4-二羟基苯丙氨酸（DOPA）的有机胶粘剂的大量研究。相比之下，造礁牡蛎通过产生生物矿化的有机-无机胶粘剂，代表了海洋软体动物粘附的另一重要“无机”策略，至今仍很少进行研究，迄今尚无合成类似物的报道。在这里，报道了一种基于牡蛎启发的新型有机无机胶粘剂，其基于生物矿化的聚电解质水凝胶，该胶粘剂由通过很小的无定形碳酸钙纳米粒子（<3 nm）物理交联的聚丙烯酸组成。矿物增强的聚电解质水凝胶粘合剂显示为可注射，可重复使用，在空气中固化后具有光学透明性。此外，对于干和湿条件下的水凝胶粘合剂，发现了与基于DOPA的粘合剂相当的粘合性能，甚至可以通过引入少量的第二大交联剂（例如带负电的纳米粒子）来进一步提高粘合性能。目前的矿物水凝胶代表了一种新型的生物启发性有机-无机胶粘剂，可能在胶粘剂化学中发现各种潜在的应用。
更新日期：2018-03-08
中文翻译：
矿物增强的聚丙烯酸水凝胶，是牡蛎启发的有机-无机杂化胶
水下附着力对于许多久坐不动的海洋生物形式至关重要。其中，贻贝附着力研究最多，这激发了对基于3,4-二羟基苯丙氨酸（DOPA）的有机胶粘剂的大量研究。相比之下，造礁牡蛎通过产生生物矿化的有机-无机胶粘剂，代表了海洋软体动物粘附的另一重要“无机”策略，至今仍很少进行研究，迄今尚无合成类似物的报道。在这里，报道了一种基于牡蛎启发的新型有机无机胶粘剂，其基于生物矿化的聚电解质水凝胶，该胶粘剂由通过很小的无定形碳酸钙纳米粒子（<3 nm）物理交联的聚丙烯酸组成。矿物增强的聚电解质水凝胶粘合剂显示为可注射，可重复使用，在空气中固化后具有光学透明性。此外，对于干和湿条件下的水凝胶粘合剂，发现了与基于DOPA的粘合剂相当的粘合性能，甚至可以通过引入少量的第二大交联剂（例如带负电的纳米粒子）来进一步提高粘合性能。目前的矿物水凝胶代表了一种新型的生物启发性有机-无机胶粘剂，可能在胶粘剂化学中发现各种潜在的应用。
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