High-Strength and Excellent Self-Healing Polyurethane Elastomer Based on Rigid Chain Segment Reinforcement

Macromolecules, Год журнала: 2025, Номер unknown

Опубликована: Янв. 24, 2025

Owing to their extensive application scope, elastomers that combine high strength and excellent self-healing efficiency have always attracted significant attention are still a contradiction. In this study, novel PU elastomer was prepared by combining rigid poly(amic acid) (PAA) chain segments 3,3-dithiodipropionic dihydrazide (DPH) containing sextuple hydrogen-bonding units disulfide bonds. The exhibited tensile of 50.1 MPa toughness 144.2 MJ/m3. PAA serve as framework, significantly enhancing the mechanical elastomer. Meanwhile, DPH with bonds enabled exhibit an 96.1% after 12 h at 80 °C. Additionally, strong reversible cross-linking arrays in endows it strength, ability, recyclability, allowing be recycled hot pressing dissolution.

Язык: Английский

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Self-Healing, Highly Stretchable Conductive Polyurethane Elastomers Containing Aniline Trimers with Shape Memory Effect

Polymer, Год журнала: 2025, Номер unknown, С. 128139 - 128139

Опубликована: Фев. 1, 2025

Язык: Английский

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Self-healing polyurethane elastomers with dynamic crosslinked networks for complex structure 3D printing

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160193 - 160193

Опубликована: Фев. 1, 2025

Язык: Английский

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Self-Healing Flexible Fiber Optic Sensors for Safe Underwater Monitoring

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер 17(2), С. 4067 - 4074

Опубликована: Янв. 6, 2025

The advancement of underwater monitoring technologies has been significantly hampered by the limitations traditional electrical sensors, particularly in presence electromagnetic interference and safety concerns aquatic environments. Fiber optic sensors are therefore nowadays widely applied to devices. However, silicon- polymer-based optical fibers often face challenges, such as rigidity, susceptibility environmental stress, limited operational flexibility. Here, we propose an ingenious flexible step-index fiber construction strategy for preparation core-cladding poly(polymerizable deep eutectic solvent (PDES)) (CPOF) situ light curing functional PDES monomer a commercial silicone tube. liquid-free poly(PDES) core not only possesses high transparency (>90%), excellent flexibility, wide temperature range tolerance (from −27 156 °C), but supramolecular network it also provides self-adhesion self-healing, which ensures bonding stability interface well lifetime device. On other hand, hydrophobic cladding allows CPOF stably transmit signals under water, application potential sensing devices was verified motion monitoring.

Язык: Английский

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From Sea Cucumbers to Soft Robots: A Photothermal-Responsive Hydrogel Actuator with Shape Memory

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Янв. 19, 2025

Soft robotics has undergone considerable progress driven by materials that can effectively transduce external stimuli into mechanical actuation. Here, we report the development of a photothermal-responsive hydrogel actuator with shape memory capabilities inspired adaptive locomotion sea cucumbers. This is based on cucumber peptides (SCP) and liquid metal (LM) network responsive to near-infrared (NIR) light. Upon NIR irradiation, undergoes phase transition from swollen collapsed state, resulting in controlled volumetric change. Incorporating polymer (SMP) matrix facilitates actuator's retention its deformed configuration following stimulus removal, thereby enabling intricate, multiphase transformations. SCP/LM overcomes limitations traditional hydrogels achieves good stretchability (3,000%) enough adhesion (21 kPa), exhibiting no toxicity human cells. Furthermore, exhibited significant bending complex deformation within 100 s exposure. offers new opportunities for soft biomedical applications, showcasing potential pathway incorporating next generation smart devices.

Язык: Английский

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Tuning the Compatibilizer Content and Healing Temperature in Thermally Mendable Polyamide 6/Cyclic Olefin Copolymer Blends

Polymers, Год журнала: 2025, Номер 17(3), С. 280 - 280

Опубликована: Янв. 22, 2025

This study presents the formulation and comprehensive characterization of compatibilized polyamide 6 (PA6)/cyclic olefin copolymer (COC) blends with aim developing a self-healing matrix for thermoplastic structural composites. Rheological analysis highlighted compatibilizing effect ethylene glycidyl methacrylate (E-GMA), as evidenced by an increase in viscosity, melt strength (MS), breaking stretching ratio (BSR), thus improving processability during film extrusion. E-GMA also decreased COC domain size improved interfacial interaction PA6, which was at basis higher tensile strain break compared to neat PA6/COC blends. significantly boosted healing efficiency (HE), measured via fracture toughness tests quasi-static impact conditions. The optimal temperature identified 160 °C, associated HE 38% mode 82% content 5 wt% (PA6COC_5E-GMA). under conditions attributed planar surface, facilitated flow agent crack zone, proven fractography analysis. work demonstrates potential fine-tuning thermomechanical properties PA6COC_5E-GMA emerged best balance between efficiency, paving way advanced multifunctional composites applications.

Язык: Английский

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Thermal-Sensitive Artificial Ionic Skin with Environmental Stability and Self-Healing Property

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер 17(6), С. 9115 - 9124

Опубликована: Янв. 30, 2025

Wearable temperature-sensitive electronic skin enables robots to rapidly detect environmental changes and respond intelligently, thereby reducing temperature-related mechanical failures. Additionally, this can measure record the temperature of external objects, broadening its potential applications in medical field. In study, we designed a thermally sensitive artificial ionic using liquids (ILs) as solvents carbon nanotubes (CNTs) conductive fillers. The incorporation ILs into polymer network enhances thermal stability, while CNTs establish dual conduction pathways (CNTs-CNTs CNTs-polymer chain segments), leading rapid response times only 16 s. initiation IL dissociation at elevated temperatures boosts carrier density, resulting substantial improvement sensitivity (5%/°C). Furthermore, displays remarkable self-healing properties (90%), extending lifespan practical applications. This kind stably sense wearer's body provide an ideal long-term stable new functional material for development human such robots.

Язык: Английский

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A lignin/castor oil-based polyamide autonomous self-healing composite materials

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 141159 - 141159

Опубликована: Фев. 1, 2025

Язык: Английский

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Bacterial cellulose/reduced graphene oxide bilayer films for moist-electric power generation

Journal of Materials Chemistry A, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

The moist-electric working mechanism and high-power output of a bacterial cellulose/reduced graphene oxide bilayer film.

Язык: Английский

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Biosourced Self-Healable Eutectogels for Flexible Sensors

ACS Applied Electronic Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 26, 2025

Язык: Английский

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