期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 12, 页码 10471-10479出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b01082
关键词
adhesion; biomimetic synthesis; gels; oyster; organic-inorganic hybrid composites
资金
- National Science Foundation of China (NSFC) [21676089, 5171101370, 21604024, 51773061]
- Shanghai Talent Development Fund [2017038]
- Natural Science Foundation of Shanghai
- Innovation Program of Shanghai Municipal Education Commission [15ZZ030]
- Open Project of State Key Laboratory of Chemical Engineering [SKL-ChE-16C02]
- Fundamental Research Funds for the Central Universities [222201717013]
- Chenguang Program - Shanghai Education Development Foundation
- Chenguang Program - Shanghai Municipal Education Commission [16CG32]
- 111 Project [B08021]
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 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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