Versatile Quasi‐Solid Ionic Conductive Elastomer Inspired by Desertification Control Strategy for Soft Iontronics

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(43)

Published: June 21, 2023

Abstract Ionic conductors, such as hydrogels, ionogels, and eutectogels, have attained considerable research interest in various advanced application scenarios. However, ionic conductors still suffer from the restriction of inherent liquid compositions, which may leak or evaporate. Herein, inspired by control strategy desertification caused soil erosion, a novel internal‐external dual enhancement design strategy, i.e., increasing interaction between filler itself its matrix, is proposed to firmly embed deep eutectic solvent (DES) into polyurethane (PU) prevent leakage, that prepared conductive elastomers (PU‐DESs) are quasi‐solid. The PU‐DESs exhibit marvelous versatility including high stretchability, tensile strength, toughness, self‐healing efficiency, antibacterial ability, conductivity, excellent freezing tolerance. More intriguingly, benefiting their quasi‐solid feature, endowed with long‐term environmental stability. Thanks these superb versatile features, further successfully applied wearable sensor triboelectric nanogenerator (TENG) for monitoring human motions converting mechanical energy electrical energy, breaking away limitations previous most soft iontronics leakage evaporation weak strength. Hence, this study establishes an effective material demanding stability durability.

Language: Английский

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Natural, Biocompatible, and 3D-Printable Gelatin Eutectogels Reinforced with Tannic Acid-Coated Cellulose Nanocrystals for Sensitive Strain Sensors

ACS Applied Electronic Materials, Journal Year: 2023, Volume and Issue: 5(4), P. 2184 - 2196

Published: March 21, 2023

Ionic gels from eutectic mixtures are attracting extensive interest in bioelectronics owing to their nonvolatile nature, low cost, and inherently high ionic conductivity. Biodegradable electronics made of biopolymers envisage a promising future this field, but unfortunately, they often feature poor mechanics. Herein, we explored tannic acid-decorated cellulose nanocrystals (TA@CNC) as dynamic nanofillers biocompatible eutectogels based on gelatin mixture composed choline chloride ethylene glycol (ethaline). Small concentrations TA@CNC (up 1–2 wt %) allow increasing by two-fold the strength (30 kPa) stretchability (180%) while improving conductivity (105 mS·m–1). The reversible physical network protein multiple hydrogen bonding interactions with acid endow these good self-adhesiveness, suitable gel-to-sol transition for 3D printing, recyclability. We further used nanocomposite skin-conformal electrodes monitoring different motions human body excellent sensitivity open air thanks volatility ethaline. All all, results demonstrate facile strategy boost properties biopolymer using inexpensive renewable raw materials rigid nanoreinforcers.

Language: Английский

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Highly ion-conducting, robust and environmentally stable poly(vinyl alcohol) eutectic gels designed by natural polyelectrolytes for flexible wearable sensors and supercapacitors

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 480, P. 147888 - 147888

Published: Dec. 14, 2023

Language: Английский

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Bioinspired Strong, Tough, and Biodegradable Poly(Vinyl Alcohol) and its Applications as Substrates for Humidity Sensors

Advanced Materials Technologies, Journal Year: 2023, Volume and Issue: 8(7)

Published: Jan. 29, 2023

Abstract Biodegradable polymeric materials with high strength and outstanding toughness are necessary for real‐world applications in the fields of electronics, electrics, packaging. Unfortunately, such performance portfolios polymers remain challenging to achieve due their different governing mechanisms. Inspired by hydrogen‐bond (H‐bond) cross‐linking structure spider silk, herein, strong tough poly(vinyl alcohol) (PVA) composites β‐cyclodextrin as a cross‐linker developed. Benefiting from H‐bond effect, addition 1.0 wt% enables PVA tensile 136.5 MPa, elastic modulus 3.0 GPa, combination good 82.1 MJ m −3 . In addition, presence improves biodegradability composite decreasing its crystalline size. Furthermore, PVA/β‐cyclodextrin combined MXene has great potential sensor material humidity strain detection. This proof‐of‐concept opens numerous opportunities create strong, tough, biodegradable packing sensing applications.

Language: Английский

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Super stable, highly ion-conductive and transparent eutecto-/hydro-gel promotes wearable electronic and visual strain sensing

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 461, P. 141965 - 141965

Published: Feb. 18, 2023

Language: Английский

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