材料科学
单宁酸
适应性
明胶
胶粘剂
粘附
水下
自愈水凝胶
复合材料
纳米技术
仿生学
高分子化学
图层(电子)
生态学
生物化学
生物
海洋学
地质学
有机化学
化学
作者
Zhonghe Yuan,Tao Wang,Changzhuan Shao,Shurui Yang,Weixiang Sun,Yunhua Chen,Zhiping Peng,Zhen Tong
标识
DOI:10.1002/adfm.202412950
摘要
Abstract Underwater adhesion of hydrogels is essential for their applications in liquid environment. However, green raw materials, facile preparation process and multiple environmental adaptability are still issues that need to be improved. Inspired by the protein‐based underwater bio‐adhesion phenomena in nature, an effective stepwise immersion method is developed without any polymerization to prepare a green underwater adhesive hydrogel by combining gelatin and tannic acid (TA), two common materials from nature yet difficult to obtain their homogenous compound. By facile treatments in urea solution or heating, the hydrogels can realize stable immediate adhesion on various substrates and in different liquids in addition to water with a wide range of adjustable adhesion strength of 10 0 –10 3 kPa. The evolution of the hydrogel network structure and the adhesion mechanism are systematically studied. Furthermore, several typical portable products based on the adhesive hydrogels are demonstrated to show the commercialization possibility. This work presented a novel, facile, and distinctive strategy for designing environmentally friendly, multiple adaptive adhesives.
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