Abstract
Mechanically robust ferrogels with high self-healing ability might change the design of soft materials used in strain sensing. Herein, a robust, stretchable, magneto-responsive, notch insensitive, ionic conductive nanochitin ferrogel was fabricated with both autonomous self-healing and needed resilience for strain sensing application without the need for additional irreversible static chemical crosslinks. For this purpose, ferric (III) chloride hexahydrate and ferrous (II) chloride as the iron source were initially co-precipitated to create magnetic nanochitin and the co-precipitation was confirmed by FTIR and microscopic images. After that, the ferrogels were fabricated by graft copolymerisation of acrylic acid-g-starch with a monomer/starch weight ratio of 1.5. Ammonium persulfate and magnetic nanochitin were employed as the initiator and crosslinking/nano-reinforcing agents, respectively. The ensuing magnetic nanochitin ferrogel provided not only the ability to measure strain in real-time under external magnetic actuation but also the ability to heal itself without any external stimulus. The ferrogel may also be used as a stylus for a touch-screen device. Based on our findings, our research has promising implications for the rational design of multifunctional hydrogels, which might be used in applications such as flexible and soft strain sensors, health monitoring, and soft robotics.
Subject
Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry
Reference40 articles.
1. Coaxial thermoplastic elastomer-wrapped carbon nanotube fibers for deformable and wearable strain sensors;Zhou;Adv. Funct. Mater.,2018
2. Highly sensitive flexible pressure sensors with microstructured rubber dielectric layers;Mannsfeld;Nat. Mater.,2010
3. Towards flexible solid-state supercapacitors for smart and wearable electronics;Dubal;Chem. Soc. Rev.,2018
4. Stretchable, skin-mountable, and wearable strain sensors and their potential applications: A review;Amjadi;Adv. Funct. Mater.,2016
5. Lin, L., Park, S., Kim, Y., Bae, M., Lee, J., Zhang, W., Gao, J., Paek, S.H., and Piao, Y. (Nano Mater. Sci., 2022). Wearable and stretchable conductive polymer composites for strain sensors: How to design a superior one?, Nano Mater. Sci., in press.
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献