Progress in Organic Coatings, Journal Year: 2025, Volume and Issue: 200, P. 109064 - 109064
Published: Jan. 17, 2025
Language: Английский
Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(20), P. 13903 - 13913
Published: May 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.
Language: Английский
Citations
47
Carbohydrate Polymers, Journal Year: 2024, Volume and Issue: unknown, P. 121812 - 121812
Published: Jan. 1, 2024
Language: Английский
Citations
44
Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)
Published: April 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
Language: Английский
Citations
31
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: July 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.
Language: Английский
Citations
21
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(23)
Published: Feb. 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.
Language: Английский
Citations
20
Progress in Polymer Science, Journal Year: 2024, Volume and Issue: 154, P. 101847 - 101847
Published: June 13, 2024
Language: Английский
Citations
18
Advanced Science, Journal Year: 2024, Volume and Issue: 11(12)
Published: Jan. 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.
Language: Английский
Citations
16
Science Advances, Journal Year: 2024, Volume and Issue: 10(10)
Published: March 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.
Language: Английский
Citations
16
Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)
Published: Jan. 2, 2025
Language: Английский
Citations
4
Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)
Published: Jan. 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.
Language: Английский
Citations
3