【Advanced Healthcare Materials】Aquatic Diatoms-Inspired Universal Adhesive Coacervates Triggered by Water（IF=11.09, 中科院一區）
writer：Wen Sun, Tingwu Liu, Xieli Zhang, Xu Zhang, Qiuyan Yan *, Jinghua Yin, Shifang Luan *.
keywords：aquatic diatoms-inspired, adhesives, coacervation, water-triggered
source：期刊
specific source：Advanced Healthcare Materials
Issue time：2023年
Abstract：
Adhesives with strong underwater adhesion performance are urgently needed in diverse areas. However, designing adhesives with long-term stability to diverse materials underwater in a facile way is challenging. Here, inspired by aquatic diatoms, a serious of novel biomimetic universal adhesives were reported that shows tunable performance with robust and long-lasting stable underwater adhesion to various substrates, including wet biological tissues. The versatile and robust wet-contact adhesives are pre-polymerized by N-[tris(hydroxymethyl)methyl]acrylamide (THMA), n-Butyl acrylate (BA) and methylacrylic acid (MA) in dimethyl sulphoxide (DMSO) and spontaneously coacervated in water triggered by solvent exchange. The synergistic interaction between hydrogen bonding and hydrophobic interaction allows the hydrogels with instant and strong adhesion to various substrate surfaces. The slowly formed covalent bonds enhance cohesion and adhesion strength in hours. The spatial and timescale-dependent adhesion mechanism endow the adhesives with strong and long-lasting stable underwater adhesion to be coupled with fault-tolerant convenient surgical operations.