PSS-dispersed dopamine triggered formation of PAA adhesive hydrogel as flexible wearable sensors

He, Xinhua; Wen, Nuan; Zhang, Wei; He, Shuai; Yang, Shuang; Li, Xinhua; Chen, Chaoxi; Zuo, Fang

doi:10.1039/d2ra07243b

Cited by 9 publications

(3 citation statements)

References 38 publications

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“…Due to the limited content of PVA, the mechanical properties show a small range of improvement, but are superior to those of some adhesive hydrogels reported in the past. [30][31][32] The ductility of the hydrogel sheet was further observed during stretching. The hydrogel sheet became thin in the middle during stretching and could reach up to seven times elongation, which is benecial to energy dissipation, increasing the adhesion energy at the interface (Fig.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

A Janus adhesive hydrogel sheet for preventing postoperative tissue adhesion of intestinal injuries

Li,

Liang,

Chen

et al. 2024

RSC Adv.

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Section: Mechanical Propertiesmentioning

confidence: 99%

A Janus adhesive hydrogel sheet for preventing postoperative tissue adhesion of intestinal injuries

Li,

Liang,

Chen

et al. 2024

RSC Adv.

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“…Therefore, there has been growing interest in incorporating phenolic structures into the hydrogel network, inspired by marine organisms like mussels and oysters known for their natural wet adhesion properties. Recent studies have explored phenolic structures such as tannin, , dopamine, , and gallic acid , to enhance the adhesive properties of hydrogel-based sensors. Enhancing wet tissue adhesion significantly improves the sensitivity and accuracy of signal acquisition by the sensor.…”

Section: Introductionmentioning

confidence: 99%

Designing a Naturally Inspired Conductive Copolymer to Engineer Wearable Bioadhesives for Sensing Applications

Oz,

Roy,

Jain

et al. 2024

ACS Appl. Mater. Interfaces

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The design of adhesive and conductive soft hydrogels using biopolymers with tunable mechanical properties has received significant interest in the field of wearable sensors for detecting human motions. These hydrogels are primarily fabricated through the modification of biopolymers to introduce cross-linking sites, the conjugation of adhesive components, and the incorporation of conductive materials into the hydrogel network. The development of a multifunctional copolymer that integrates adhesive and conductive properties within a single polymer chain with suitable cross-linking sites eliminates the need for biopolymer modification and the addition of extra conductive and adhesive components. In this study, we synthesized a copolymer based on poly([2-(methacryloyloxy)ethyl] trimethylammonium chloride-co-dopamine methacrylamide) (p(METAC-DMA)) using a controlled radical polymerization, allowing for the efficient conjugation of both adhesive and conductive units within a single polymer chain. Subsequently, our multifunctional hydrogel named Gel-MD was fabricated by mixing the p(METAC-DMA) copolymer with non-modified gelatin in which cross-linking took place in an oxidative environment. We confirmed the biocompatibility of the Gel-MD hydrogel through in vitro studies using NIH 3T3 cells as well as in vivo subcutaneous implantation in rats. Furthermore, the Gel-MD hydrogel was effective and sensitive in detecting various human motions, making it a promising wearable sensor for health monitoring and diagnosis.

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“…Adhesive soft materials play a crucial role in wearable electronic devices. − They serve as either temporary solutions, such as tapes, or permanent fixtures, like robust glues, enabling the bonding of diverse substrates. − However, commonly employed adhesives in the market often suffer from drawbacks, including low bonding strength, tendency to detach, lack of reusability, susceptibility to damage during detachment, and residual contamination of substrates. , Hence, there is significant interest in developing adhesives with a high bonding strength, reusability, and resistance to specific environments. Marine organisms, such as mussels, augment adhesion by establishing robust electrostatic interactions with negatively charged rock surfaces via cationic and aromatic hydrophobic amino acids, which gives a chance for the biomimetic preparation of adhesive soft electronics. − …”

Section: Introductionmentioning

confidence: 99%

A Tough and Reusable Ionogel Adhesive for Flexible Strain Sensor

Qi,

Liu,

Zhao

et al. 2024

ACS Appl. Polym. Mater.

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Ionogels have gained increasing attention in the field of flexible electronic devices. However, it is a huge challenge to prepare ionogels with high toughness and adhesive property. In this study, we present a straightforward approach to fabricating tough and reusable ionogel adhesives by randomly copolymerizing two monomers with varying solubilities in an ionic liquid solvent. Specifically, acrylamide (AM) and methacryloxyethyltrimethylammonium bis(trifluoromethanesulfonyl)imide ([MATAC]-[TFSI]) are copolymerized in situ in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIM][TFSI]) to form phase-separated ionogels, wherein the hydrogen-bond-rich phases and solvent-rich phases contribute to enhancing toughness. The abundant noncovalent interactions provide the robust internal cohesive force, which provides ionogels a stable adhesion ability during the cyclic adhesion−peeling process. The resulting ionogel adhesive exhibits elevated fracture strength (2.75 MPa), impressive toughness (9.58 MJ/m 3 ), non-disposable adhesiveness (0.692 MPa), and exceptional environmental stability. Moreover, the sensor prepared by ionogel adhesives demonstrates fatigue resistance and a wide detection range, thus holding potential for the development of advanced and sustainable flexible electronic devices.

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PSS-dispersed dopamine triggered formation of PAA adhesive hydrogel as flexible wearable sensors

Abstract: PSS-dispersed dopamine triggered the formation of a DA:PSS/PAA hydrogel, which exhibited good adhesion and could serve as a flexible wearable sensor.

Cited by 9 publications

References 38 publications

A Janus adhesive hydrogel sheet for preventing postoperative tissue adhesion of intestinal injuries

A Janus adhesive hydrogel sheet for preventing postoperative tissue adhesion of intestinal injuries

Designing a Naturally Inspired Conductive Copolymer to Engineer Wearable Bioadhesives for Sensing Applications

A Tough and Reusable Ionogel Adhesive for Flexible Strain Sensor

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