Instant and Strong Underwater Adhesion by Coupling Hygroscopicity and In Situ Photocuring

胶粘剂 粘附 材料科学 水下 纳米技术 单体 复合材料 聚合物 图层(电子) 地质学 海洋学
作者
Yongsen Zhou,Chao Zhang,Shouwei Gao,Baoping Zhang,Jing Sun,Ji‐Jung Kai,Bing Wang,Zuankai Wang
出处
期刊:Chemistry of Materials [American Chemical Society]
卷期号:33 (22): 8822-8830 被引量:33
标识
DOI:10.1021/acs.chemmater.1c03007
摘要

Designing underwater adhesives with short bonding time yet strong adhesion is in pressing demand in many applications such as underwater construction and medical healthcare. However, shortening the bonding time normally leads to premature bonding and thus weak adhesion. Such trade-off becomes more pronounced in the presence of interfacial water, which disrupts adhesive–adherend interactions. The adverse influence of interfacial water on adhesion can be alleviated by various dehydrating strategies; however, attaining high adhesion within a short bonding time still remains a challenge. Here, we present a facile approach that resolves this challenge by embedding a photoreactive monomer into a hygroscopic matrix. This engineered photocurable adhesive instantly absorbs the interfacial water and solidifies upon in situ photocuring (IPC), allowing for the construction of strong adhesive–adherend interactions and bulk cohesion within 10 s. The hygroscopic adhesive with significantly reduced bonding time demonstrates an impressive underwater adhesion strength up to 7.6 MPa, surpassing the state-of-the-art performances. The synergy of efficient adsorption of interfacial water with the IPC strategy could open new opportunities for the development of high-performance underwater adhesives.
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