In Situ Anchoring Functional Molecules to Polymer Chains Through Supramolecular Interactions for a Robust and Self‐Healing Multifunctional Waterborne Polyurethane

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 22, 2025

Abstract Nowadays, much attention is paid to the development of high‐performance and multifunctional materials, but it still a great challenge obtain polymer materials with high mechanical properties, self‐healing multifunctionality in one. Herein, an innovative strategy proposed satisfactory waterborne polyurethane (PMWPU‐Bx) by situ anchoring 3‐aminophenylboronic acid (3‐APBA) pyrene‐capped (PMWPU) via supramolecular interactions. The multiple functional sites inherent 3‐APBA can produce interactions groups on PMWPU, promoting aggregation hard domains network, which confers PMWPU‐Bx strength (7.9 MPa) modulus (243.2 MPa). Meanwhile, dynamic natures boronic ester bonds formed condensation endow efficiency. Additionally, exhibits fluorescence tunability due controlled π–π stacking. In this research, molecules onto polymers through synchronously achieves performance multi‐functionality polyurethanes, also broadens their potential applications fields optical anticounterfeiting encrypted information transmission.

Language: Английский

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Multi-hydrogen bond induced double crosslinked network based on WPU/BC/MWCNTs for high ductility and reliable electronic skin for multimodal health monitoring

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160134 - 160134

Published: Feb. 1, 2025

Language: Английский

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Enabling Multifunctional Bio-Based Waterborne Polyurethane Through Phosphoric Acid-Assisted Exfoliation and Polyphenol-Mediated Assembly of Zirconium Phosphate Nanoplatelets for Patternable Coating

Published: Jan. 1, 2025

Language: Английский

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Biomass Oligo-Amide Based Strategy Toward the Robust, Flexible and Self-Healing Waterborne Polyurethane Network

Published: Jan. 1, 2025

Language: Английский

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Advanced Multifunctional Self-Healing Composites for the Integration of Wear Resistance and Damage Monitoring

Published: Jan. 1, 2025

Language: Английский

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Enhanced Multifunction in Polyurethane Elastomers via Regulation of Triple‐Crosslinked Network With Dynamic Covalent and Noncovalent Bonds

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

ABSTRACT Self‐healing polyurethane elastomers with dynamic crosslinking networks are promising candidates for intelligent next‐generation coatings. However, their constitutive relation shows conflicts between high mechanical performance and room‐temperature self‐healing, as well recyclability. Here, a regulation strategy of triple‐crosslinked network in the hard domain was proposed to achieve multifunction enhancement via covalent borate ester bonds coupling noncovalent. The distribution ratio bonds, boron‐nitrogen coordination multiple hydrogen were meticulously designed balance fracture reconstruction molecular network. introduced enabled basic self‐healing through molecule‐level topological evolution. abundant provided external noncovalent reversible networks, thus improving tensile strength toughness physical points. obtained exhibited impressive light transmittance 93%, 41.07 MPa, elongation at break 1673.20%, 166.74 MJ m −3 , almost entirely 48 h. These even maintained 90% original properties after suffering three recycles. This may promote practical application coatings automobile flexible electronic industry.

Language: Английский

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Self‐Healing and Recyclable Waterborne Polyurethane With Ultra‐High Toughness Based on Dynamic Covalent and Hydrogen Bonds

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

ABSTRACT The implementation of self‐healing properties in waterborne polyurethane (WPU) materials plays a pivotal role resource conservation and pollution mitigation. In this work, strategy was devised to balance the mechanical WPU by incorporating bis(hydroxyethyl) disulfide (HEDS), an aliphatic disulfide, as chain extender. synthesized constructed dynamic molecular network through bonds (SS). Meanwhile, physical cross‐linked formed hydrogen from carbamate groups. synergistic effect dual significantly contributed remarkable capability WPU. Specifically, optimal sample (SWPU‐15) not only exhibited tensile strength 33.42 MPa toughness 162.19 MJ/m 3 but also achieved healing efficiency 81.9% when heated at 80°C for 4 h. Profiting abundant bonds, SWPU‐15 could be recycled hot pressing or solvent treatment, with its remaining above 20 after recycling. This study provided feasible approach preparing environmentally friendly excellent performance demonstrates promising prospects potential applications.

Language: Английский

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Multifunctional Polyurethane Exhibiting High Mechanical Performance and Shape‐Memory‐Assisted Self‐Healing

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 30, 2025

Abstract Polymeric materials often face inherent trade‐offs between mechanical performance and self‐healing capabilities, which presents significant challenges to their development practical application. Here, an effective strategy is reported overcome these limitations. By introducing a highly crystalline polyol—characterized by its chain folding storage length—and coordination bonds into polyurethane, exceptional balance of high tensile strength (47.18 ± 2.35 MPa), elongation at break (5952.72 254.20%), outstanding toughness (1396.39 90.05 MJ m −3 ), hardness (shore D 43.8 0.8) achieved, while also maintaining intrinsic properties. The material's facilitated the water solubility polyol (polyethylene glycol, PEG), enables rapid healing welding low temperatures (4 °C) with aid water. Additionally, shape‐memory recovery force further enhances crack closure healing, contributing durability. This unique combination capabilities underscores potential this material for advanced applications that require both properties robust functionality.

Language: Английский

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Dragonfly Wing‐Inspired Reticular Hierarchical Structure Enables Strong and Tough Supramolecular Elastomers

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Abstract Dragonfly wings possess exceptionally high strength, toughness, and fatigue resistance due to their unique hierarchical structure from the micro macro scale. Inspired by this, mismatched supramolecular interactions (MMSIs) are introduced into dynamic acylsemicarbazide groups, constructing an interconnected hybrid network of soft hard segments in SPUU‐DS elastomer. This design, featuring a dense array hydrogen bonds, achieves exceptional mechanical properties: true stress at breaks 1.1 GPa comparable that typical spider silk (0.8–1.5 GPa); toughness 325.54 MJ m −3 , twice (≈160 ); fracture energy 232.83 kJ −2 surpassing many metals alloys. Furthermore, monitoring device with “hamburger” is developed integrating conductive graphene film. When placed inside tire, this enhances tire's puncture approximately twofold. By correlating signals angles, system enables detection damage various locations on allowing for timely repair preventing traffic accidents. novel biomimetic approach, inspired dragonfly wings, provides valuable insights designing healable elastomers superior properties.

Language: Английский

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Enabling multifunctional bio-based waterborne polyurethane through polyphenol-mediated assembly of zirconium phosphate nanoplatelets for patternable coating

Composites Science and Technology, Journal Year: 2025, Volume and Issue: unknown, P. 111178 - 111178

Published: April 1, 2025

Language: Английский

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