纳米片
材料科学
自愈水凝胶
共价键
耐久性
纳米复合材料
复合数
弯曲
纳米技术
弹性(材料科学)
复合材料
化学
高分子化学
有机化学
作者
Fanglin Chen,Zehuan Huang,Tao Li,Tangxin Xiao,Shufen Wang,Guoheng Bai,Hong Sun,San‐E Zhu,Wei Yang,Hongdian Lu,Chunxiang Wei
标识
DOI:10.1002/admt.202200745
摘要
Abstract Integration of both excellent mechanical performance and remarkable durability into composite hydrogel materials is highly demanded yet challenging. Herein, a synergistic strategy of combining covalent crosslinks with nanosheet‐reinforced dynamic interactions is developed for the design and fabrication of deformable and recoverable nanocomposite hydrogels. Layered double hydroxide nanosheets and a trace amount of covalent crosslinks are simultaneously incorporated into the network, providing profound synergy in mechanical enhancement and durability extension. The resultant materials displayed high deformability (stretchability >1100%, compressibility >90%), considerable springiness and resilience, rapid and excellent recovery over 2000 cycles of compression and retraction as well as a 100% hysteresis ratio after only 1 min during large stretching. Notably, these networks are also transparent and ionically conductive. To demonstrate the utility, a wearable strain sensor is constructed for sensing and detecting human motions (e.g., subtle movement of mouth‐opening and large motion of joint‐bending), exhibiting a linear response with high sensitivity (gauge factor as high as 7.66) over 100–300% strain. This line of research will inspire renewed interest and work into synergic exploitation of nanospecies‐reinforced interactions and covalent crosslinks into the design of high‐performance composite materials.
科研通智能强力驱动
Strongly Powered by AbleSci AI