Preparation of conductive self-healing hydrogels <i>via</i> an interpenetrating polymer network method

Wang, Huan-Jung; Chu, Yi-Zuo; Chen, Chen-Kang; Liao, Y. C.; Yeh, Mei-Yu

doi:10.1039/d0ra09476e

Cited by 8 publications

(13 citation statements)

References 58 publications

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“…To endow the self‐healing hydrogel with additional functionalities. Yeh's group 50 presented a new self‐healing and conductive interpenetrating polymer network hydrogels. While conductive carbon black was employed as conductive segment, polyacrylamide could interact with dialdehyde‐functionalized poly (ethylene glycol) (DF‐PEG) to gain Schiff base, thus making hydrogels with self‐healing characteristics.…”

Section: Synthesis Strategies and Working Mechanisms Of Conductive Se...mentioning

confidence: 99%

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Recent progress in conductive self‐healing hydrogels for flexible sensors

Tao

Liao

et al. 2022

Journal of Polymer Science

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Flexible sensors have great potential in the application of wearable and implantable devices, and conductive hydrogels have been widely used in wearable sensing devices due to their biomimetic structure, biocompatibility, adjustable transparency and stimuli-responsive electrical properties. Conventional conductive hydrogels are prone to be damaged in their application process and lack of long-term reliability. Inspired by natural organisms such as mussels, introduction of self-healing capabilities has been regarded as a promising approach to extend the service life of hydrogel sensing devices. This work

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Section: Synthesis Strategies and Working Mechanisms Of Conductive Se...mentioning

confidence: 99%

“…(C) Schiff base bond contributes to the self‐healing capability of hydrogel. Reproduced from Reference 50, with permission from 2021 Royal Society of chemical…”

Section: Synthesis Strategies and Working Mechanisms Of Conductive Se...mentioning

confidence: 99%

Recent progress in conductive self‐healing hydrogels for flexible sensors

Tao

Liao

et al. 2022

Journal of Polymer Science

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“…For SEM samples preparation, the hydrogel samples were rapidly frozen in liquid nitrogen and further lyophilized with a freeze dryer system under vacuum at −80 • C for at least 24 h until all of the water was sublimed. Freeze-dried hydrogel samples were coated with platinum under vacuum, and were used to investigate the morphology of the pAMAL-based hydrogels utilizing a Jeol (Tokyo, Japan) JSM-7600F scanning electron microscopy [68,69]. The mechanical tests were performed on a tensile tester (Gotech AI-3000-U, Taichung, Taiwan).…”

Section: Measurementsmentioning

confidence: 99%

Alkyl Chain Length Effects of Imidazolium Ionic Liquids on Electrical and Mechanical Performances of Polyacrylamide/Alginate-Based Hydrogels

Chen

Wang

et al. 2021

Gels

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Conductive hydrogels with stretchable, flexible and wearable properties have made significant contributions in the area of modern electronics. The polyacrylamide/alginate hydrogels are one of the potential emerging materials for application in a diverse range of fields because of their high stretch and toughness. However, most researchers focus on the investigation of their mechanical and swelling behaviors, and the adhesion and effects of the ionic liquids on the conductivities of polyacrylamide/alginate hydrogels are much less explored. Herein, methacrylated lysine and different alkyl chain substituted imidazole-based monomers (IMCx, x = 2, 4, 6 and 8) were introduced to prepare a series of novel pAMAL-IMCx-Ca hydrogels. We systematically investigated their macroscopic and microscopic properties through tensile tests, electrochemical impedance spectra and scanning electron microscopy, as well as Fourier transform infrared spectroscopy, and demonstrated that an alkyl chain length of the IMCx plays an important role in the designing of hydrogel strain sensors. The experiment result shows that the hexyl chains of IMC6 can effectively entangle with LysMA through hydrophobic and electrostatic interactions, which significantly enhance the mechanical strength of the hydrogels. Furthermore, the different strain rates and the durability of the pAMAL-IMC6-Ca hydrogel were investigated and the relative resistance responses remain almost the same in both conditions, making it a potential candidate for wearable strain sensors.

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“…Conductive hydrogels are important materials for the fabrication of flexible and wearable electric sensors because of their outstanding designability, good biocompatibility, high stretchability, excellent electrical conductivity, strong adhesion, and so on. − These well-designed conductive hydrogels have been extensively used in the field of electronic skins, − wearable devices, − flexible sensors, − human motion monitoring, , and brain–computer interface …”

Section: Introductionmentioning

confidence: 99%

Electroactive and Stretchable Hydrogels of 3,4-Ethylenedioxythiophene/thiophene Copolymers

Chen

Zhang

et al. 2023

ACS Omega

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Hydrogels are conductive and stretchable, allowing for their use in flexible electronic devices, such as electronic skins, sensors, human motion monitoring, brain–computer interface, and so on. Herein, we synthesized the copolymers having various molar ratios of 3,4-ethylenedioxythiophene (EDOT) to thiophene (Th), which served as conductive additives. With doping engineering and incorporation with P(EDOT-co-Th) copolymers, hydrogels have presented excellent physical/chemical/electrical properties. It was found that the mechanical strength, adhesion ability, and conductivity of hydrogels were highly dependent on the molar ratio of EDOT to Th of the copolymers. The more the EDOT, the stronger the tensile strength and the greater the conductivity, but the lower the elongation break tends to be. By comprehensively evaluating the physical/chemical/electrical properties and cost of material use, the hydrogel incorporated with a 7:3 molar ratio P(EDOT-co-Th) copolymer was an optimal formulation for soft electronic devices.

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Preparation of conductive self-healing hydrogels via an interpenetrating polymer network method

Abstract: A new type of conductive interpenetrating polymer network hydrogel exhibited self-healing reversibility mechanically and electrically when cut and self-healed, making it possible to apply in soft and conformable electronics.

Cited by 8 publications

References 58 publications

Recent progress in conductive self‐healing hydrogels for flexible sensors

Recent progress in conductive self‐healing hydrogels for flexible sensors

Alkyl Chain Length Effects of Imidazolium Ionic Liquids on Electrical and Mechanical Performances of Polyacrylamide/Alginate-Based Hydrogels

Electroactive and Stretchable Hydrogels of 3,4-Ethylenedioxythiophene/thiophene Copolymers

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