Construction of polydopamine reduced graphene oxide/sodium carboxymethyl cellulose/polyacrylamide double network conductive hydrogel with high stretchable, pH-sensitive and strain-sensing properties

Yin, Huixian; Li, Shuo; Xie, Hanyu; Wu, Yeke; Zou, Xinquan; Huang, Yi‐Cheng; Wang, Jikui

doi:10.1016/j.colsurfa.2022.128428

Cited by 26 publications

(10 citation statements)

References 49 publications

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“…The improvement of mechanical properties of composite hydrogels by GO ensures the application of composite hydrogels in the field of wearable devices, which require materials to respond to environmental stimuli, such as temperature [ 33 , 35 , 43 , 57 , 61 , 62 , 65 , 66 ], pH [ 39 , 40 , 67 ], light [ 68 ] and strain. Environmental stimulation will lead to changes in the structure and properties of matrix polymers.…”

Section: Introductionmentioning

confidence: 99%

Graphene oxide composite hydrogels for wearable devices

2022

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For graphene oxide (GO) composite hydrogels, a two-dimensional GO material is introduced into them, whose special structure is used to improve their properties. GO contains abundant oxygen-containing functional groups, which can improve the mechanical properties of hydrogels and support the application needs. Especially, the unique-conjugated structure of GO can endow or enhance the stimulation response of hydrogels. Therefore, GO composite hydrogels have a great potential in the field of wearable devices. We referred to the works published in recent years, and reviewed from these aspects: (a) structure of GO; (b) factors affecting the mechanical properties of the composite hydrogel, including hydrogen bond, ionic bond, coordination bond and physical crosslinking; (c) stimuli and signals; (d) challenges. Finally, we summarized the research progress of GO composite hydrogels in the field of wearable devices, and put forward some prospects.

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Section: Introductionmentioning

confidence: 99%

Graphene oxide composite hydrogels for wearable devices

2022

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“…The response time of the PAM@SiO 2 -NH 2 /(ILs-GN) hydrogel sensor was calculated as 300 ms. As shown in Figure g, we compared its GF values with those of other similar strain sensors reported and found that the GF of the PAM@SiO 2 -NH 2 /(ILs-GN) hydrogel sensor was at a relatively high level. Its excellent tensile properties and chemosensitivity over a wide operating range are superior to most reported hydrogel cuticular sensors. ,,,− …”

Section: Resultsmentioning

confidence: 99%

“…Jo et al 21 enhanced cell growth and differentiation by reducing a composite hydrogel of GO and PAAM, yielding a conductivity of 10 −4 S/cm. Yin et al 22 developed a novel conductive hydrogel by incorporating sodium carboxymethylcellulose (CMCNa) and polydopamine (PDA)-reduced graphene oxide (D-rGO) into a polyacrylamide (PAM) hydrogel, achieving a strain of 1255%. However, the graphene inside the hydrogel tended to partially agglomerate, leading to a variable elongation.…”

Section: Introductionmentioning

confidence: 99%

Simple Fabrication of Silica Amino Sphere-Reinforced Ionic Liquids/Graphene Conductive Hydrogel Sensors with Super Toughness, Self-Healing, and Strain Sensitivity Properties

Xie,

Lv,

Tian

et al. 2023

Macromolecules

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Conductive hydrogels have gained considerable interest in their potential applications in fields such as soft robotics, electronic devices, and wearable technology. However, their widespread use has been limited due to the inherent brittleness of conventional hydrogels. In response to this challenge, we have engineered a multifunctional conductive hydrogel, characterized by dual physical cross-linking networks, using a simple, one-pot method. Our design incorporates acrylamide (AM), lauryl methacrylate (LMA), graphene (GN), silica amino spheres (SiO 2 -NH 2 ), and 1-hexadecyl-3-methylimidazole chloride (ILs). Notably, the LMA, SiO 2 -NH 2 spheres, and AM play key roles in energy dissipation through hydrophobic association and hydrogen bonding, serving as dynamic cross-linking points. This structural configuration endows our resultant PAM@SiO 2 -NH 2 /(ILs-GN) hydrogels with impressive tensile strains, peaking at an extraordinary 15,318%, along with super toughness measuring 51.4 MJ/m 3 and self-healing capabilities. Moreover, the ILs facilitate effective dispersion of graphene, leading to superior conductivity and stable resistance changes in the hydrogel, with a conductivity measurement of 12 mS/cm. The hydrogel also demonstrates high sensitivity, with a gauge factor of 18.94 at a strain of 1200%. When implemented as a strain sensor, the hydrogel capably monitors a broad spectrum of human movements in real time, capturing both large-scale deformation and minute, nuanced motions. The culmination of these findings suggests the immense potential of our hydrogel sensors for use in flexible electronic skin applications, establishing them as promising candidates for multifunctional sensors and flexible electrodes.

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“…This uniform distribution was advantageous for enhancing the hydrogel's conductive properties. 14,36…”

Section: Resultsmentioning

confidence: 99%

A mussel-inspired semi-interpenetrating structure hydrogel with superior stretchability, self-adhesive properties, and pH sensitivity for smart wearable electronics

Xing,

Song,

Zou

et al. 2023

J. Mater. Chem. C

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Construction of polydopamine reduced graphene oxide/sodium carboxymethyl cellulose/polyacrylamide double network conductive hydrogel with high stretchable, pH-sensitive and strain-sensing properties

Cited by 26 publications

References 49 publications

Graphene oxide composite hydrogels for wearable devices

Graphene oxide composite hydrogels for wearable devices

Simple Fabrication of Silica Amino Sphere-Reinforced Ionic Liquids/Graphene Conductive Hydrogel Sensors with Super Toughness, Self-Healing, and Strain Sensitivity Properties

A mussel-inspired semi-interpenetrating structure hydrogel with superior stretchability, self-adhesive properties, and pH sensitivity for smart wearable electronics

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