Affiliation:
1. Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province Hunan University of Technology Zhuzhou 412007 China
2. National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology Hunan University of Technology Zhuzhou 412007 China
3. National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University Zhengzhou 450000 China
4. The First Affiliated Hospital of Henan University of Chinese Medicine Zhengzhou 450000 China
Abstract
AbstractThe intricate muscle arrangement structure endows the biological tissues with unique mechanical properties. Inspired by that, a mechanically robust and multifunctional anisotropic Polyacrylamide/Sodium alginate/Zirconium ion/Carbon dots (PAM/SA/Zr4+/CDs, PSZC) hydrogel is developed through the synergistic effect of mechanical‐assisted stretching, Zr4+ metal‐coordination and CDs embedding. The resulting hydrogel exhibited an impressive tensile strength of 2.56 MPa and exceptional toughness of 10.10 MJ m−3 along the stretching direction, attributing to the oriented alignment of PAM and SA molecular chains induced by mechanical‐assisted stretching and metal‐coordination. The dense network structure endowed the PSZC hydrogel with excellent anti‐swelling performance, achieving a swelling ratio of only 1.7% after being stored in water for 30 days. The presence of Zr4+ conferred remarkable electrical conductivity of 2.15 S m−1 to the PSZC hydrogel. Furthermore, the integration of carbon dots imparted the PSZC hydrogel fluorescence properties, rendering it visual sensing capabilities. Overall, a straightforward strategy is proposed for fabricating a mechanically robust and multifunctional hydrogel suitable for underwater sensing and visual sensing, offering valuable insights for the development of high‐performance underwater sensors.
Funder
Natural Science Foundation of Hunan Province
Scientific Research Foundation of Hunan Provincial Education Department