Biocompatible Tough Ionogels with Reversible Supramolecular Adhesion

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(20), С. 13903 - 13913

Опубликована: Май 9, 2024

Cohesive and interfacial adhesion energies are difficult to balance obtain reversible adhesives with both high mechanical strength strength, although various methods have been extensively investigated. Here, a biocompatible citric acid/L-(−)-carnitine (CAC)-based ionic liquid was developed as solvent prepare tough ionogels for engineered biological adhesives. The prepared exhibited good properties, including tensile (14.4 MPa), Young's modulus (48.1 toughness (115.2 MJ m–3), on the glass substrate (24.4 MPa). Furthermore, can form mechanically matched at interface of wet tissues (interfacial about 191 J m–2) be detached by saline solution demand, thus extending potential applications in clinical scenarios such wound nondestructive transfer organs.

Язык: Английский

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Tough, self-healing, and injectable dynamic nanocomposite hydrogel based on gelatin and sodium alginate

Carbohydrate Polymers, Год журнала: 2024, Номер unknown, С. 121812 - 121812

Опубликована: Янв. 1, 2024

Язык: Английский

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Compliant Iontronic Triboelectric Gels with Phase-Locked Structure Enabled by Competitive Hydrogen Bonding

Nano-Micro Letters, Год журнала: 2024, Номер 16(1)

Опубликована: Апрель 9, 2024

Rapid advancements in flexible electronics technology propel soft tactile sensing devices toward high-level biointegration, even attaining perception capabilities surpassing human skin. However, the inherent mechanical mismatch resulting from deficient biomimetic properties of materials poses a challenge to application wearable human-machine interaction. Inspired by innate biphasic structure subcutaneous tissue, this study discloses skin-compliant iontronic triboelectric gel via phase separation induced competitive hydrogen bonding. Solvent-nonsolvent interactions are used construct bonding systems trigger separation, and soft-hard alternating phase-locked confers with Young's modulus (6.8-281.9 kPa) high tensile (880%) compatible The abundance reactive hydroxyl groups gives excellent tribopositive self-adhesive (peel strength > 70 N m

Язык: Английский

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Tough Supramolecular Hydrogels Crafted via Lignin‐Induced Self‐Assembly

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Июль 10, 2024

Abstract Supramolecular hydrogels are typically assembled through weak non‐covalent interactions, posing a significant challenge in achieving ultra strength. Developing higher strength based on molecular/nanoscale engineering concepts is potential improvement strategy. Herein, super‐tough supramolecular hydrogel by gradually diffusing lignosulfonate sodium (LS) into polyvinyl alcohol (PVA) solution. Both simulations and analytical results indicate that the assembly subsequent enhancement of crosslinked network primarily attributed to LS‐induced formation gradual densification strong crystalline domains within hydrogel. The optimized exhibits impressive mechanical properties with tensile ≈20 MPa, Young's modulus ≈14 toughness ≈50 MJ m⁻ 3 , making it strongest lignin‐PVA/polymer known so far. Moreover, LS provides excellent low‐temperature stability (<‐60 °C), antibacterial, UV‐blocking capability (≈100%). Interestingly, diffusion ability demonstrated for self‐restructuring damaged hydrogel, 3D patterning surfaces, enhancing local freeze‐thaw PVA goal foster versatile platform combining eco‐friendly biocompatible PVA, paving way innovation interdisciplinarity biomedicine, materials, forestry science.

Язык: Английский

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Structuring and Shaping of Mechanically Robust and Functional Hydrogels toward Wearable and Implantable Applications

Advanced Materials, Год журнала: 2024, Номер 36(23)

Опубликована: Фев. 23, 2024

Abstract Hydrogels possess unique features such as softness, wetness, responsiveness, and biocompatibility, making them highly suitable for biointegrated applications that have close interactions with living organisms. However, conventional man‐made hydrogels are usually soft brittle, inferior to the mechanically robust biological hydrogels. To ensure reliable durable operation of wearable implantable devices, mechanical matching shape adaptivity tissues organs essential. Recent advances in polymer science processing technologies enabled engineering shaping various applications. In this review, network structuring strategies at micro/nanoscales toughening summarized, representative functionalities exist materials but not easily achieved synthetic further discussed. Three categories technologies, namely, 3D printing, spinning, coating fabrication tough hydrogel constructs complex shapes reviewed, corresponding also highlighted. These developments enable adaptive functional promote application fields biomedical engineering, bioelectronics, robotics.

Язык: Английский

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Constructing Phase Separation in Polymer Gels: Strategies, Functions and Applications

Progress in Polymer Science, Год журнала: 2024, Номер 154, С. 101847 - 101847

Опубликована: Июнь 13, 2024

Язык: Английский

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Tough Hydrogels for Load‐Bearing Applications

Advanced Science, Год журнала: 2024, Номер 11(12)

Опубликована: Янв. 15, 2024

Abstract Tough hydrogels have emerged as a promising class of materials to target load‐bearing applications, where the material has resist multiple cycles extreme mechanical impact. A variety chemical interactions and network architectures are used enhance properties fracture mechanics making them stiffer tougher. In recent years, tough, high‐performance been benchmarked, however, this is often incomplete important variables like water content largely ignored. review, aim clarify reported state‐of‐the‐art tough by providing comprehensive library property data. First, common methods for characterization such introduced. Then, various modes energy dissipation obtain discussed categorize individual datasets helping asses material's (fracture) properties. Finally, current applications considered, compared with existing materials, future opportunities discussed.

Язык: Английский

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Bicontinuous vitrimer heterogels with wide-span switchable stiffness-gated iontronic coordination

Science Advances, Год журнала: 2024, Номер 10(10)

Опубликована: Март 8, 2024

Currently, it remains challenging to balance intrinsic stiffness with programmability in most vitrimers. Simultaneously, coordinating materials gel-like iontronic properties for ion transmission while maintaining vitrimer programmable features underexplored. Here, we introduce a phase-engineering strategy fabricate bicontinuous heterogel (VHG) materials. Such VHGs exhibited high mechanical strength, an elastic modulus of up 116 MPa, strain performance exceeding 1000%, and switchable ratio surpassing 5 × 10 3 . Moreover, highly reprocessing shape memory morphing were realized owing the liquid–enhanced VHG network reconfiguration. Derived from pathway ILgel, which responded wide-span mechanics, iontronics had unique bidirectional stiffness-gated piezoresistivity, both positive negative piezoresistive properties. Our findings indicate that system can act as foundational material various promising applications, including smart sensors, soft machines, bioelectronics.

Язык: Английский

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Coordinatively stiffen and toughen polymeric gels via the synergy of crystal-domain cross-linking and chelation cross-linking

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Янв. 2, 2025

Язык: Английский

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Compressible, anti-fatigue, extreme environment adaptable, and biocompatible supramolecular organohydrogel enabled by lignosulfonate triggered noncovalent network

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Янв. 2, 2025

Achieving a synergy of biocompatibility and extreme environmental adaptability with excellent mechanical property remains challenging in the development synthetic materials. Herein, "bottom-up" solution-interface-induced self-assembly strategy is adopted to develop compressible, anti-fatigue, environment adaptable, biocompatible, recyclable organohydrogel composed chitosan-lignosulfonate-gelatin by constructing noncovalent bonded conjoined network. The ethylene glycol/water solvent induced lignosulfonate nanoparticles function as bridge chitosan/gelation network, forming multiple interfacial interactions that can effectively dissipate energy. exhibits high compressive strength (54 MPa) toughness (3.54 MJ/m3), 100 70 times higher than those pure chitosan/gelatin hydrogel, meanwhile, self-recovery fatigue resistance properties. Even when subjected severe compression up strain 0.5 for 500,000 cycles, still intact. This also demonstrates notable both vivo vitro, at low temperature, well recyclability. Such all natural provides promising route towards high-performance load-bearing Development load bearing materials important, but it be achieve required Here, authors report an from biobased materials, favourable toughness.

Язык: Английский

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