Self-Healable, Adhesive, Anti-Drying, Freezing-Tolerant, and Transparent Conductive Organohydrogel as Flexible Strain Sensor, Triboelectric Nanogenerator, and Skin Barrier

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(34), P. 40975 - 40990

Published: Aug. 16, 2023

Conductive hydrogels have attracted tremendous interest in the construction of flexible strain sensors and triboelectric nanogenerators (TENGs) owing to their good stretchability adjustable properties. Nevertheless, how simultaneously achieve high transparency, self-healing, adhesion, antibacterial, anti-freezing, anti-drying, biocompatibility properties through a simple method remains challenge. Herein, transparent, freezing-tolerant, multifunctional organohydrogel (PAOAM-PDO) as electrode for TENGs was constructed free radical polymerization 1,3-propanediol (PDO)/water binary solvent system, which oxide sodium alginate, aminated gelatin, acrylic acid, AlCl3 were used raw materials. The obtained PAOAM-PDO exhibited transparency (>90%), adhesiveness, antibacterial property, conductivity (1.13 S/m), long-term environmental stability. introduction PDO endowed with freezing resistance low point -60 °C, could serve protective skin barrier prevent frostbite at temperature. be assembled monitor heterogeneous human movements sensitivity (gauge factor 7.05, = 233%). Meanwhile, further fabricated TENG "sandwich" structure single mode. Moreover, resulting achieved electrical outputs hand tapping served self-powered device light light-emitting diodes. This work displays feasible strategy build environment-tolerant organohydrogels, possess potential applications wearable electronics devices.

Language: Английский

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Ultra-Tough, highly stable and Self-Adhesive Goatskin-Based intelligent Multi-Functional organogel e-skin as Temperature, Humidity, Strain, and bioelectric four-mode sensors for health monitoring

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 149816 - 149816

Published: Feb. 19, 2024

Language: Английский

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Hydrogel sensors for biomedical electronics

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 481, P. 148317 - 148317

Published: Dec. 23, 2023

Language: Английский

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Coordination/salting-out synergistic construction of multifunctional PVA/chitosan conductive organohydrogel as strain and bioelectrical sensors

Polymer, Journal Year: 2024, Volume and Issue: 298, P. 126889 - 126889

Published: March 9, 2024

Language: Английский

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CQDs-Cross-Linked Conductive Collagen/PAA-Based Nanocomposite Organohydrogel Coupling Flexibility with Multifunctionality for Dual-Modal Sensing of Human Motions

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: unknown

Published: April 27, 2024

Conductive hydrogels are ideal materials for intelligent medical devices, human-machine interfaces, and flexible bioelectrodes due to their adjustable mechanical properties electrical responsiveness, whereas it is still a great challenge achieve the integration of excellent flexibility biocompatibility into one hydrogel sensor while also incorporating self-healing, self-adhesion, environmental tolerance, antimicrobial properties. Here, nanocomposite conductive organohydrogel was constructed by using collagen (Col), alginate-derived carbon quantum dots (OSA-CQDs), poly(acrylic acid) (PAA), ethylene glycol reduced AgNPs, Fe3+ ions. Depending on OSA-CQDs with multiple chemical binding sites high specific surface area as cross-linkers, coupling highly biologically active Col chains PAA serving an energy dissipation module, resulting exhibited (795% strain, 193 kPa strength), cell compatibility (>95% survival rate), self-healing efficiency (HE = 79.5%), antifreezing (−20 °C), moisturizing (>120 h), repeatable adhesion (strength >20 kPa, times >10), inhibitory activity against Escherichia coli Staphylococcus aureus (9 21.5 cm2), conductivity, strain sensitivity (σ 1.34 S/m, gauge factor (GF) 11.63). Based all-in-one multifunction, can collaboratively adapt multimode sensing electrophysiological realize wireless real-time monitoring human activities physiological health. Therefore, this work provides new common platform design next-generation hydrogel-based smart wearable sensors.

Language: Английский

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Collagen fiber-reinforced, tough and adaptive conductive organohydrogel e-skin for multimodal sensing applications

Journal of Materials Chemistry B, Journal Year: 2024, Volume and Issue: 12(28), P. 6940 - 6958

Published: Jan. 1, 2024

Conductive hydrogels (CHs) with high sensitivity and multifunctional property are considered as excellent materials for wearable devices flexible electronics. Surface synapses internal multilayered structures key factors highly sensitive pressure sensors. Nevertheless, current CHs lack environmental adaptability, perception, instrument portability, which seriously hinders their application Here, waste collagen fibers (buffing dust of leather), polyvinyl alcohol (PVA) gelatin (Gel) were used the basic framework hydrogel, loaded a conductive material (silver nanoparticles (BD-CQDs@AgNPs)) an anti-freezing moisturizer (glycerol (Gly)), resulting in organohydrogel (BPGC-Gly). As temperature humidity sensor, it demonstrated response range (-20-60 °C) was capable rapid (2.4 s) recovery (1.6 to human breathing. strain/pressure allowed real-time monitoring movement had low-pressure (

Language: Английский

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Self-healing, environmentally stable and adhesive hydrogel sensor with conductive cellulose nanocrystals for motion monitoring and character recognition

Carbohydrate Polymers, Journal Year: 2024, Volume and Issue: 332, P. 121932 - 121932

Published: Feb. 8, 2024

Language: Английский

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Using chitosan nanofibers to simultaneously improve the toughness and sensing performance of chitosan-based ionic conductive hydrogels

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 260, P. 129272 - 129272

Published: Jan. 9, 2024

Language: Английский

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Tough, conductive hydrogels based on gelatin and oxidized sodium carboxymethyl cellulose as flexible sensors

Carbohydrate Polymers, Journal Year: 2024, Volume and Issue: 335, P. 121920 - 121920

Published: Feb. 9, 2024

Language: Английский

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Poly(vinyl alcohol)/polyacrylamide double‐network ionic conductive hydrogel strain sensor with high sensitivity and high elongation at break

Journal of Polymer Science, Journal Year: 2024, Volume and Issue: 62(20), P. 4599 - 4611

Published: July 19, 2024

Abstract As a soft material with biocompatibility and stimulation response, ionic conductive hydrogel‐based wearable strain sensors show great potential across wide spectrum of engineering disciplines, but their mechanical toughness is limited in practical applications. In this study, freeze‐thawing techniques were utilized to fabricate double‐network hydrogels poly(vinyl alcohol)/polyacrylamide (PVA/PAM) both covalent physical cross‐linking networks. These demonstrate excellent performance, an elongation at break 2253% tensile strength 268.2 kPa. Simultaneously, they also display high sensitivity (Gage factor, GF = 2.32 0%–200% strain), achieve rapid response time 368 ms without the addition extra fillers or ions, stable signal transmission even after multiple cycles, fast human motion detection.

Language: Английский

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