期刊
MACROMOLECULAR BIOSCIENCE
卷 22, 期 2, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mabi.202100361
关键词
cupric ion crosslinking; mechanical properties; polyacrylamide; radiation synthesis; sodium alginate; strain-sensitivity
资金
- National Natural Science Foundation of China [11875078, 12075010]
The PAM/Cu-alg DN hydrogel electrolyte synthesized by radiation technique and Cu2+ crosslinking exhibits superior mechanical properties and high ionic conductivity, paving the way for the preparation of DN hydrogel electrolytes with excellent properties.
The double network (DN) hydrogel has attracted great attention due to its wide applications in daily life. However, synthesis DN hydrogel with excellent mechanical properties is still a big challenge. Here, polyacrylamide/copper-alginate double network (PAM/Cu-alg DN) hydrogel electrolyte is successfully synthesized by radiation-induced polymerization and cross-linking process of acrylamide with N, N'-methylene-bis-acrylamide and subsequent cupric ion (Cu2+) crosslinking of alginate. The content of sodium alginate, absorbed dose, and the concentration of Cu2+ are investigated in detail for improving the overall properties of PAM/Cu-alg DN hydrogel electrolyte. The PAM/Cu-alg DN hydrogel electrolyte synthesizes by radiation technique and Cu2+ crosslinking shows superior mechanical properties with a tensile strength of 2.25 +/- 0.02 MPa, excellent energy dissipation mechanism, and the high ionic conductivity of 4.08 +/- 0.17 mS cm(-1). PAM/Cu-alg DN hydrogel is characterized with attenuated total reflection Fourier transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, and X-ray photoelectron spectroscopy analyses and the reason for the improvement of mechanical properties is illustrated. Furthermore, PAM/Cu-alg DN hydrogel electrolyte exhibits excellent strain-sensitivity, cyclic stability, and durability. This work paves for the new way for the preparation of DN hydrogel electrolytes with excellent properties.
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