Polyelectrolyte-derived adhesive, super-stretchable hydrogel for a stable, wireless wearable sensor

Heo, Sohyeon; Seo, Hyun-Su; Song, Changsik; Shin, Seunghan; Kwon, Kil Koang

doi:10.1039/d1tc04258k

Cited by 12 publications

(3 citation statements)

References 42 publications

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“…[ 35 ] The introduction of AMPS enhanced the mechanical properties of the eutectic gel while imparting excellent self‐adhesive ability to the eutectic gel. [ 36 ] Figure 3c showed the schematic diagram of the lap shear experiment and the schematic diagram of the mechanism of eutectic gel adhesion to different substrates. The P(DEST/AMPS) exhibited a discrepant shear strength with the lowest adhesion force of 10 kPa (P(DEST/AMPS)‐0, Figure 3d), and the highest adhesion force of 84 kPa (P(DEST/AMPS)‐2, Figure 3d).…”

Section: Resultsmentioning

confidence: 99%

An Eutectic Gel Based on Polymerizable Deep Eutectic Solvent with Self‐Adhesive, Self‐adaptive Cold and High Temperature Environments

Wang

Chen

Zhou

et al. 2023

Adv Materials Technologies

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into elastic materials such as polyurethane. [7] Although these nanofillers provided excellent electrical conductivity to the elastomer, the phase separation between the nanoparticles and the elastomer material could lead to the shedding of the nanofillers during use. [8,9] Also, the introduction of these nanofillers tends to reduce the transparency of the material. Since most of the substrate materials for these strain sensors were polyurethanebased materials, [10] resulting in the preparation of sensors that are stiffer relative to the human skin. [11,12] Hydrogels and ionic liquid gels had great potential for the preparation of flexible conductive sensors. [3,13] Xia et al. prepared a conductive wearable sensor using a dual physical cross-linked double network hydrogel composed of polyacrylamide as the first network and Ca 2+ cross-linked alginate as the second network. [14] This dualnetwork structure imparts high strength, toughness, stretchability, and excellent selfrecovery properties to the hydrogel. Jiang et al. prepared a flexible and transparent (94.3%) ionic gel as a skin sensor by mixing ionic liquid (IL) and thermoplastic polyurethane. This flexible conductive sensor can operate at −40 °C to 100 °C. [15] Jin et al. successfully prepared a strong and tough self-adhesive hydrogel by introducing chitosan and 2-acrylamide-2-methylpropanesulfonic acid into a polyacrylamide network using a one-pot method. [16] This hydrogel had good adhesion properties and the prepared sensor can be directly adhered to the surface of human skin. In summary, all of these efforts had their outstanding merits, but in many aspects, there were also shortcomings. In the previous work, we learned that most conventional intrinsically conducting polymers are based on hydrogels and ionic liquid gels. [17][18][19] Hydrogels are generally difficult to use properly in harsh environments, and both low and high temperatures can destroy the original properties of hydrogels. Although ionic liquids were resistant to harsh environments, they were generally expensive and somewhat toxic. Usually, in order to ensure a close fit of the sensor to the skin, we expect the prepared gel to be self-adhesive, which not only improves the sensitivity of the sensing but also does not require any tape assistance. [20][21][22]

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Section: Resultsmentioning

confidence: 99%

An Eutectic Gel Based on Polymerizable Deep Eutectic Solvent with Self‐Adhesive, Self‐adaptive Cold and High Temperature Environments

Wang

Chen

Zhou

et al. 2023

Adv Materials Technologies

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“…The strong ionic interaction between AMPSs and VIPS within or between the polymer chains of hydrogels acts as sacricial secondary cross-linking, in addition to the primary chemical cross-linking originating from MBAA. In addition, the AAm monomer was copolymerized with AMPSs/VIPS to form the tough P(AMPSs/VIPS-co-AAm) hydrogel by shielding the repulsion between charged monomers [17][18][19] and forming numerous hydrogen bonds among AAm-AMPSs, AAm-AAm, and AAm-VIPS. 20 The synergistic effect of the dynamic ionic bonds and hydrogen bonds, which effectively dissipates the energy applied during deformation and restores the hydrogel to its original state, provides it with good mechanical toughness, high elongation, and excellent recovery characteristics.…”

Section: Preparation Of the All Polymeric P(ampss/vips-co-aam) Hydrogelmentioning

confidence: 99%

All polymeric conductive strain sensors with excellent skin adhesion, recovery, and long-term stability prepared from an anion–zwitterion based hydrogel

et al. 2023

Self Cite

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“…For most polyelectrolyte-based conductive hydrogels, conductivity comes from the structure and the ions among the structure. The unique three-dimensional framework structure of hydrogels provides sufficient channels for ion migration and their porous networks allow water and small molecular solutes to move, thereby improving the conductivity [22] . Heo et al prepared poly(2-acrylamido-2-methyl-1-propanesulfonic acid sodium salt-co-acrylamide)/sodium caseinate hydrogel (P(AMPSs-co-AAm)/SC hydrogel) [23] .…”

Section: Conduction Theory Of Polyelectrolyte-based Conductive Hydrogelsmentioning

confidence: 99%

Polyelectrolyte-based conductive hydrogels: from theory to applications

Fan¹,

Chen²,

Sun³

et al. 2022

Soft Sci

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With the continuous development of soft conductive materials, polyelectrolyte-based conductive hydrogels have gradually become a major research hotspot because of their strong application potential. This review first considers the basic conductive theory of hydrogels, which can be divided into the hydrogel structure and zwitterionic enhancing conductivity theories. We then classify polyelectrolyte-based conductive hydrogels into different types, including double, ionic-hydrogen bond, hydrogen bond，and physically crosslinked networks. Furthermore, the mechanical, electrical, and self-healing properties and fatigue and temperature interference resistance of polyelectrolyte-based conductive hydrogels are described in detail. We then discuss their versatile applications in strain sensors, solid-state supercapacitors, visual displays, wound dressings, and drug delivery. Finally, we offer perspectives on future research trends for polyelectrolyte-based conductive hydrogels.

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Polyelectrolyte-derived adhesive, super-stretchable hydrogel for a stable, wireless wearable sensor

Abstract: The simultaneous integration of diverse performance attributes, such as self-adhesive capability, stretchability, mechanical stability, and high ionic conductivity, is one of the key issues in the research of wearable electronic devices.

Cited by 12 publications

References 42 publications

An Eutectic Gel Based on Polymerizable Deep Eutectic Solvent with Self‐Adhesive, Self‐adaptive Cold and High Temperature Environments

An Eutectic Gel Based on Polymerizable Deep Eutectic Solvent with Self‐Adhesive, Self‐adaptive Cold and High Temperature Environments

All polymeric conductive strain sensors with excellent skin adhesion, recovery, and long-term stability prepared from an anion–zwitterion based hydrogel

Polyelectrolyte-based conductive hydrogels: from theory to applications

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