43. [EPJ] Rapidly self-recoverable and fatigue-resistant hydrogels toughened by chemical crosslinking and hydrophobic association
作者：Xin Liu, Lijie Duan , Guanghui Gao
關(guān)鍵字：Hybrid hydrogels, Chemical crosslinking, Hydrophobic association ,Rapid self-recovery ,Fatigue resistance
論文來源：期刊
具體來源：European Polymer Journal
發(fā)表時(shí)間：2017年
Designing load-bearing hydrogels with superior toughness and stiffness are crucially important for cartilage replacement and tissue engineering. In this investigation, we report that hybrid hydrogels can simultaneously achieve high stiffness and toughness by introducing covalent and physical interactions. The chemical crosslinking can sustain hydrogel networks as a rigid component and the hydrophobic association is introduced as a dynamic crosslinking center for efficient energy dissipation. The storage modulus G′ can reach nearly 40 kPa and the compression stress was nearly 8 MPa at 95% compression strain. Moreover, the hybrid hydrogel exhibited time-dependent, rapid self-recoverable and fatigue resistant behavior based on the cyclic loadingunloading compression test. The hybrid hydrogels with excellent self-recovery and fatigue resistance would provide a large number of potential applications, such as artificial cartilages and muscles and scaffolds for tissue engineering.