Strong and tough poly(vinyl alcohol)/xanthan gum-based ionic conducting hydrogel enabled through the synergistic effect of ion cross-linking and salting out

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 263, P. 130511 - 130511

Published: Feb. 27, 2024

Language: Английский

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Multi-role conductive hydrogels for flexible transducers regulated by MOFs for monitoring human activities and electronic skin functions

Journal of Materials Chemistry B, Journal Year: 2024, Volume and Issue: 12(25), P. 6190 - 6202

Published: Jan. 1, 2024

Metal organic frameworks (MOFs) have garnered significant attention in the development of stretchable and wearable conductive hydrogels for flexible transducers. However, MOFs used hydrogel networks been hampered by low mechanical performance poor dispersibility aqueous solutions, which affect hydrogels, including toughness, limited self-recovery, short working ranges, conductivity, prolonged response-recovery times. To address these shortcomings, a novel approach was adopted micelle co-polymerization

Language: Английский

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Multifunctional Capabilities of Malonic Acid-Bridged Conductive Hydrogels for Wearable Electronic Devices

ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: 6(16), P. 9940 - 9951

Published: Aug. 12, 2024

Flexible and strain-sensing smart materials have received significant attention from researchers due to their potential use in human motion detection, soft robotics, epidermis sensors, energy storage devices, etc. However, low mechanical strength, range sensitivity, high time response, antifatigue resistance hampered the application of previously fabricated materials. Herein, a malonic acid (MA)-reinforced hydrogel was prepared through one-pot-free radical polymerization, which MA makes bridge by connecting hydrophobically associated polyacrylamide (PAmm) polydodecyl methacrylate (PDDMA) physical cross-linking. Ethyl-hexadecyl dimethylammonium bromide (EHDDAB), cationic surfactant, is used ensure formation micelles. The micelles polymer chains are bridged via interactions electrostatic charge enhanced dicarboxylic groups present on molecules. Notable strength observed for MA4 with 2102% strain, 2.36 MPa stress, excellent cyclic stability. At 500% suggests sensitivity tensile as indicated its gauge factor 6.9 fast response recovery time. Meanwhile, ionic conductivity after addition LiCl calculated 0.20 S/m. Furthermore, practical applications were detection different motions like finger bending, wrist movement, elbow knee movements. Similarly, small physiological larynx vibration detected speaking, coughing, drinking water. an electronic pen showed responses multiple languages both speaking writing. MA-regulated hydrogels show possibility flexible many applications, including touch screens, biomedical monitoring, robotic devices.

Language: Английский

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Ion–electron based poly(Amm-co-BA)@GO conductive hydrogels for wearable strain sensors

Sensors and Actuators A Physical, Journal Year: 2023, Volume and Issue: 364, P. 114782 - 114782

Published: Oct. 29, 2023

Language: Английский

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Tannic acid strengthen adhesion of poly(AAm-co-GG) hydrogels for multiple solid surfaces repairing

International Journal of Adhesion and Adhesives, Journal Year: 2024, Volume and Issue: 132, P. 103735 - 103735

Published: May 18, 2024

Language: Английский

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