41. [Soft Matter] Rapidly recoverable, anti-fatigue, super-tough double-network hydrogels reinforced by macromolecular microspheres
作者：Jiliang Hou, Xiuyan Ren, Shuang Guan, Lijie Duan, Guang Hui Gao, Yu Kuai and Huixuan Zhang
關鍵字：hydrogel
論文來源：期刊
具體來源：Soft Matter
發表時間：2017年
In this study, a novel strategy was designed to prepare rapidly recoverable, anti-fatigue, super-tough double-network hydrogels by introducing macromolecular microspheres (MMs) as cross-linking centers for hydrophobic associations. MMs were prepared via emulsion polymerization using butyl acrylate (BA) as a main component and dicyclopentyl acrylate (DCPA) as a cross-linker. Then, a double-network (DN) hydrogel was prepared using gelatin as the first network and a copolymer of acrylamide and hexadecyl methacrylate stabilized by MMs as the second network. As a result, the DN hydrogels that were toughened by MMs exhibited an excellent fracture strength of 1.48 MPa and a fracture strain of 2100%. Moreover, the hydrogels exhibited rapid recoverability and fatigue resistance. Therefore, the strategy would open up a novel avenue for the toughening of DN hydrogels for biomedical applications