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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2D Ti3C2Tx MXene-Based Light-Driven Actuator with Integrated Structure for Self-Powered Multi-Modal Intelligent Perception Assisted by Neural Network

Nano Energy, Год журнала: 2024, Номер unknown, С. 110552 - 110552

Опубликована: Дек. 1, 2024

Язык: Английский

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Self‐Healing Yet Strong Actuator Materials with Muscle‐Like Diastole and Contraction via Multilevel Relaxations

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 10, 2024

Skeletal muscles represent a role model in soft robotics featuring agile locomotion and incredible mechanical robustness. However, existing actuators lack an optimal combination of actuation parameters (including modes, work capacity, strength, damage repair) to rival biological tissues. Here, biomimetic structural design strategy via multilevel relaxations (α/β/γ/δ-relaxation) modulation is proposed for robust healable actuator materials with muscle-like diastole contraction abilities by orientational alignment dendritic polyphenol-modified nano-assembles eutectogels. The anisotropic hierarchical micro-nanostructures assembled supramolecular interaction mimic the relative slippage actin filaments myosin muscles, ensuring bistable through rapid thermal α-relaxation expansion. Furthermore, kinetically active secondary β/γ/δ-relaxation at reconfigurable interfaces can conquer limited self-healing ability fixed-orientation polymeric chains. obtained artificial muscle exhibits high output actuation, properties (tensile strength 33.5 MPa), desired functional, efficiency (89.7%), exceeding typical natural living systems. bionic micro-nano achieves bottom-up cooperative relaxation integrate all-round performance which paves way substantial advancements next-generation intelligent robotics.

Язык: Английский

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Dynamically mechanochromic, fluorescence-responsive, and underwater sensing cellulose nanocrystal-based conductive elastomers

International Journal of Biological Macromolecules, Год журнала: 2025, Номер 296, С. 139681 - 139681

Опубликована: Янв. 10, 2025

Язык: Английский

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Biocompatible Protein/Liquid Metal Hydrogel-Enabled Wearable Electronics for Monitoring Marine Inhabitants’ Health

Engineering, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

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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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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Combination of Dynamic and Permanent Cross-Linking: A Pathway to Enhance Elasticity and Recyclability

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

Опубликована: Март 11, 2025

Thermosetting materials exhibit advantages such as dimensional stability and elasticity but lack reprocessability due to their permanently cross-linked internal structure. Introducing a reversible network endows with often compromises resilience mechanical properties. Hence, it is still significant challenge develop recyclable elastomers high traditional thermosetting remolding ability thermoplastic materials. Based on this, this work incorporates both irreversible networks into polyurethane system, constructing synergistic distinct properties achieve simultaneously. In addition, by adjusting the proportion of networks, relationship between in different was investigated, revealing effect dynamic chemical network. This provides theoretical support for design elastomer that combine thermoset

Язык: Английский

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NIR-II responsive multi-functional scaffold with PTT/CDT/CT/MHT and ion synergistic effects for all-in-one treatment of osteosarcoma-associated bone defects

Composites Part B Engineering, Год журнала: 2025, Номер unknown, С. 112504 - 112504

Опубликована: Апрель 1, 2025

Язык: Английский

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