Transparent, Anti‐Fouling and Mechanically Stable Coating with Hybrid Architecture Inspired by Corn Bracts‐Coating Strategy

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

Published: Jan. 6, 2025

Abstract In the quest for advanced coatings suitable foldable electronics and photovoltaic systems, there is a pressing need materials that combine transparency with durability. To address this, innovative special horizontal stripes transparent (SHT) coating prepared by capillary gravity self‐assembly methods. This derived from structural principles of corn bracts created through crosslinking epoxy hydrophobic modified SiO 2 an organosilicon prepolymer, bridged double terminal amino polydimethylsiloxane. The pattern surface makes SHT more than glass, bionic structure proven to be highly durable under extreme temperature fluctuations, withstanding tests 150 −20 °C over 192 h, enduring 30 days ultraviolet radiation exposure at 365 nm intensity W m − . Moreover, even after 3000 cycles scissors abrasion, maintained its anti‐fouling properties mechanical resilience. It also demonstrated remarkable chemical stability across range solvents. can easily applied various flexible rigid substrates using brush, poised find broad applications in realm optical devices.

Language: Английский

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Bioinspired Antiwear Poly(urea‐imide) Composites: Influence of Tribology on Polymer Crystal Structure

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

Published: Jan. 9, 2025

Abstract Polymer composite materials encounter considerable challenges in sustaining superior tribological properties at high rotational speeds. Inspired by the microstructure of dragonfly wings, a novel thermally stable and ambient pressure curing poly(urea‐imide) resin (PURI) with excellent has been eco‐friendly synthesis using bio‐based greener solvents. Furthermore, The PURI composites enhanced polyether ether ketone (PEEK) Polytetrafluoroethylene (PTFE) blended fabrics demonstrate mechanical, tensile strengths exceeding 175 MPa. synthesized green solvent dimethyl isosorbide (DMI) exhibit an average friction coefficient 0.1160 wear rate 2.7 × 10 −14 m 3 (N·m) −1 800 r min . performance is primarily attributed to molecular chain rearrangement during friction, which leads formation crystalline structures certain regions, phenomenon known as friction‐induced crystallization. This process entropy‐reducing mechanism that absorbs other forms energy, such frictional heat, process. Moreover, PTFE fibers underwent tribochemical reactions resulting changes lattice spacing contributing tribofilm. study provides new evidence regarding mechanisms polymer composites, beneficial for designing high‐performance wear‐resistant composites.

Language: Английский

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Fabrication of AFM‐Compatible Hydrogel Probe to Achieve Hydration Superlubrication in Salt Solutions

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

Published: Jan. 28, 2025

Abstract Hydrogels demonstrate effective lubricating properties, but the underlying mechanisms at nanoscale remain elucidated. In this study, a novel strategy is proposed by fabricating hydrogel probes compatible with atomic force microscopy (AFM) to establish superlubrication system based on hydration interactions. The probe made of polyethylene glycol diacrylate (PEGDA)‐based microspheres, which can achieve an extremely low friction coefficient 0.0014 when sliding mica surface in NaCl solution. coefficients salt solutions sequence μ(NaCl) < 0.01 μ(KCl) μ(LiCl), contradicts ion capacity (K + Na Li ), suggesting that hydrogel‐based lubrication systems are governed interplay between and ions‐polymer interactions simultaneously. observed solution ascribed superior ions, forms stable smooth layer within contact zone. This work provides new avenues for AFM‐based studies, also significantly advances comprehension

Language: Английский

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Peritoneum-inspired adaptive hydrogel sheath orchestrating long-term lubrication and antibacterial properties for drainage tube intubation

Biomaterials, Journal Year: 2025, Volume and Issue: unknown, P. 123405 - 123405

Published: May 1, 2025

Language: Английский

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Innovating Lubrication with Polyelectrolyte Hydrogels: Sustained Performance Through Lipid Dynamics

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 24, 2024

Abstract The lubrication process of natural joint cartilage involves a series coordinated mechanisms, key aspect which is its ability to continuously extract lubricating components from synovial fluid achieve sustained lubrication. Inspired by this phenomenon, study reports novel polyelectrolyte hydrogel, specifically integrating ε‐poly‐L‐lysine (ε‐PL), adeptly captures lipids environment effective similar human joints. ε‐PL within the hydrogel facilitates dynamic sequestration lipids, fostering interfacial self‐assembly. This setup, enriched with highly hydrated lipid head groups, enhances boundary capabilities for extended performance. Through rigorous evaluation friction coefficients and supramolecular interactions between it identified hydrogen bonding, charge‐dipole, hydrophobic as findings affirm versatility polyelectrolytes in synthesizing hydrogels, bridging gap creation biomimetic hydrogels that mimic enhanced durability efficiency.

Language: Английский

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