Preparation of strong, tough and conductive soy protein isolate/poly(vinyl alcohol)-based hydrogel via the synergy of biomineralization and salting out.

Autor: Deng Y; School of Chemical Engineering, Fuzhou University, Fuzhou 350108, China; College of Environment & Safety Engineering, Fuzhou University, Fuzhou 350108, China., Yang M; School of Chemical Engineering, Fuzhou University, Fuzhou 350108, China., Xiao G; College of Environment & Safety Engineering, Fuzhou University, Fuzhou 350108, China. Electronic address: xiaogao@fzu.edu.cn., Jiang X; School of Chemical Engineering, Fuzhou University, Fuzhou 350108, China; Qingyuan Innovation Laboratory, Quanzhou 362114, China. Electronic address: jiangxc@fzu.edu.cn.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2024 Feb; Vol. 257 (Pt 1), pp. 128566. Date of Electronic Publication: 2023 Dec 05.
DOI: 10.1016/j.ijbiomac.2023.128566
Abstrakt: Conductive hydrogels have shown a great potential in the field of flexible electronic devices. However, conductive hydrogels prepare by traditional methods are difficult to combine high strength and toughness, which limits their application in various fields. In this study, a strategy for preparing conductive hydrogels with high strength and toughness by using the synergistic effect of biomineralization and salting-out was pioneered. In simple terms, by immersing the CaCl 2 doped soy protein isolate/poly(vinyl alcohol)/dimethyl sulfoxide (SPI/PVA/DMSO) hydrogel in Na 2 CO 3 and Na 3 Cit complex solution, the biomineralization aroused by Ca 2+ and CO 3 2- , and the salting-out effect of both NaCl and Na 3 Cit would enhance the mechanical properties of SPI/PVA/DMSO hydrogel. Meanwhile, the ionic conductivity of the hydrogel would also increase due the introduction of cation and anion. The mechanical and electrical properties of SPI/PVA/DMSO/CaCO 3 /Na 3 Cit hydrogels were significantly enhanced by the synergistic effect of biomineralization and salting-out. The optimum tensile strength, toughness, Young's modulus and ionic conductivity of the hydrogel were 1.4 ± 0.08 MPa, 0.51 ± 0.04 MPa and 1.46 ± 0.01 S/m, respectively. The SPI/PVA/DMSO/CaCO 3 /Na 3 Cit hydrogel was assembled into a strain sensor. The strain sensor had good sensitivity (GF = 3.18, strain in 20 %-500 %) and could be used to accurately detect various human movements.
Competing Interests: Declaration of competing interest We declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work, there is no professional or other personal interest of any nature or kind in any product, service and/or company that could be construed as influencing the position presented in, or the review of, the manuscript entitled.
(Copyright © 2023. Published by Elsevier B.V.)
Databáze: MEDLINE
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