Cellulose nanocrystals boosted hydrophobically associated self-healable conductive hydrogels for the application of strain sensors and electronic devices

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 260, P. 129376 - 129376

Published: Jan. 22, 2024

Language: Английский

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Flexible Ionic Conductive Hydrogels with Wrinkled Texture for Flexible Strain Transducer with Language Identifying Diversity

Chemistry of Materials, Journal Year: 2024, Volume and Issue: 36(9), P. 4703 - 4713

Published: April 24, 2024

Conductive hydrogels have garnered significant attention in the realm of flexible electronic strain transducers (FESTs). However, development such FEST has been hindered by weak mechanical performance and low conductivity, sensitivity, stability. In this study, we introduce a novel hydrogel with wrinkled surface possessing unique ability to differentiate between different spoken written languages. Our approach involved fabricating robust, tough, ionic conductive texture through simple strategy utilizing hydrophobic initiator benzophenone (BP). BP was incorporated into hydrophobically cross-linked composed lauryl methacrylate (LMA), acrylamide (Amm), cationic monomer 2-(dimethylamino) ethyl acrylate methochloride (DMAEAMC), reinforced trimesic acid (TMA). Pluronic 123 (P123) served as source micelles, dynamically connecting polymer chains facilitating diffusion produce textured hydrogels. Furthermore, LiCl salt induced conductivity (0.18 S/m), while synergistic effect TMA enhanced electrostatic interactions DMAEAMC chains. The combination enabled stretch up 1611% high remarkable sensitivity (GF = 4.98 at 500%), wide range (0.1 500%). These are valuable candidates for integration epidermal devices. Moreover, capability monitor various large joint movements well physiological activities. Additionally, can identify languages, including English, Urdu, Pashto, respond other handwriting styles alphabets, numbers, signatures. This provides promising roadmap engineering diverse applications, especially fields sensors, skin, biomedical

Language: Английский

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Dually-crosslinked ionic conductive hydrogels reinforced through biopolymer gellan gum for flexible sensors to monitor human activities

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 276, P. 133789 - 133789

Published: July 9, 2024

Language: Английский

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An Intrinsic Self‐Healable, Anti‐Freezable and Ionically Conductive Hydrogel for Soft Ionotronics Induced by Imidazolyl Cross‐Linker Molecules Anchored with Dynamic Disulfide Bonds

Macromolecular Rapid Communications, Journal Year: 2023, Volume and Issue: 45(6)

Published: Dec. 29, 2023

Hydrogels are ideal materials for flexible electronic devices based on their smooth ion channels and considerable mechanical flexibility. A substantial volume of aqueous solution is required to enable the flow ions, resulting in agony low-temperature freezing; besides, long-term exposure bending/tensile tress triggers fatigue issues. Therefore, it a great challenge prepare hydrogels with both freeze-resistance durability. Herein, polyacrylic acid-based hydrogel hydrophobic interaction dynamic reversible covalent bonding cross-linking networks preparing (DC-hydrogel) by polymerizing bi-functional imidazole-type ionic liquid monomer integrated disulfide alkene bonds (DS/DB-IL) an octadecyl methacrylate, achieving self-healing. The DS/DB-IL anchored into polymer backbone has high affinity water, reducing freezing point while free ions provides superior conductivity DC-hydrogel. acid abundant carboxyl gives good self-adhesiveness different substrates. Ionotronics resistance-type sensors stable output performance fabricated explored its application joint motion health information. Moreover, hydrogel-based sensing arrays resolution accuracy identify 2D distribution stress. have promise various ionotronics many fields.

Language: Английский

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Xanthan gum toughen ionically conductive hydrogels for flexible and artificial epidermis sensors with multifunctionality and self-healability

Sensors and Actuators A Physical, Journal Year: 2024, Volume and Issue: 370, P. 115199 - 115199

Published: Feb. 20, 2024

Language: Английский

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Bimetallic-MOF Tunable Conductive Hydrogels to Unleash High Stretchability and Sensitivity for Highly Responsive Flexible Sensors and Artificial Skin Applications

ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: 6(12), P. 7288 - 7300

Published: June 6, 2024

Metal–organic frameworks (MOFs) are widely applied in various fields, including energy storage, drug delivery, wastewater treatment, and much more. However, their use hydrogels is limited due to low dispersion which causes agglomeration the hydrogel network many properties of sacrifices. Similarly, conductive have emerged as a promising material for skin-like sensors excellent biocompatibility mechanical flexibility. like MOFs, also face challenges such stretchability, toughness, susceptibility fatigue, resulting sensing range large response time-reduced durability sensors. In this study, highly stretchable, tough, antifatigue composite poly(dodecyl methacrylate-acrylamide-2-(acryloyloxy)ethyl trimethylammonium chloride) bimetallic metal–organic framework [p(DA-AM-AETAC)BM-MOF] was developed by integrating BM-MOFs into it. To achieve uniform within network, positively charged surfactant, ethyl hexadecyl dimethylammonium bromide, used. It facilitates formation hydrophobic interactions between matrix surface BM-MOFs. Furthermore, it can interact with surfactant polymer chains through physical interactions, significantly enhancing hydrogel. The BM-MOF-based exhibited impressive stretchability (1588%) toughness (537 kJ m–3), along exceptional properties. Moreover, demonstrated high conductivity 1.3 S/m tensile strain sensitivity ranging from 0.5 700% gauge factor 14.8 at response–recovery 195–145 ms. p(DA-AM-AETAC)BM-MOF displayed sensitive, reliable, repetitive detection wide human activities, wrist elbow rotation, finger bending, swallowing motion, speaking, well handwriting drawing. monitor pressure mimic skin. This highlights potential wearable strain, pressure, artificial skin flexible devices.

Language: Английский

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An ultralow hysteresis zwitterionic hydrogel crosslinked by functionalized graphene oxide quantum dots for dual-responsive flexible wearable sensors

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 483, P. 149282 - 149282

Published: Feb. 5, 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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Stretchable Electronics: Advances in Elastic Conductive Fibers for Multifunctional Applications

Organic Electronics, Journal Year: 2024, Volume and Issue: unknown, P. 107145 - 107145

Published: Sept. 1, 2024

Language: Английский

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