Competition-Induced Macroscopic Superlubricity of Ionic Liquid Analogues by Hydroxyl Ligands Revealed by in Situ Raman

Langmuir, Год журнала: 2024, Номер 40(8), С. 4277 - 4284

Опубликована: Фев. 15, 2024

High load-bearing capacity is one of the crucial indicators for liquid superlubricants to move toward practicality. However, some current emerging systems not only have low contact pressures but also are highly susceptible further degradation due water adsorption and even superlubricity failure. Herein, a novel choline chloride-based ionic analogues (ILAs) superlubricant with triethanolamine (TEOA) as H-bond donor reported first time; it obtains an ultralow coefficient friction (0.005) high (360 MPa, more than 2 times that similar systems) small amount (<5 wt %) from air. In situ Raman combined 1H NMR FTIR techniques reveals adsorbed competes hydroxyl group TEOA coordination Cl–, leading conversion strong H-bonds weak in ILAs; localized endow ILAs formation shear-resistance sliding interfaces, respectively, under shear motion. This study proposes strategy modulate interactions between species using air competing ligand, which provides new insights into design ILA-based macroscopic capacity.

Язык: Английский

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Tribological Properties of Pickering Emulsion Constructed with ZnO Nanoparticles Modified by Magnetic Surfactants

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2024, Номер 695, С. 134206 - 134206

Опубликована: Май 12, 2024

Язык: Английский

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Macroscale and durable near-zero wear performance on steel surfaces achieved by natural ternary deep eutectic solvents

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(33), С. 21799 - 21812

Опубликована: Янв. 1, 2024

Macroscale and durable near-zero wear performance of ternary deep eutectic solvent-based lubricants was elaborated by systematic experimental analysis molecular dynamics simulation.

Язык: Английский

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A general strategy for developing eco-friendly, harsh condition adaptive, and friction tunable supramolecular gel lubricants via hydrogen bonding interaction

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 156190 - 156190

Опубликована: Сен. 1, 2024

Язык: Английский

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Peculiar Effect of Water on Tribological Properties of Natural Deep Eutectic Solvent

Langmuir, Год журнала: 2024, Номер unknown

Опубликована: Дек. 13, 2024

Deep eutectic solvents (DESs) have emerged as promising green liquid lubricants for solving tribological problems due to their economic and excellent physicochemical lubrication properties. However, a trace amount of water would affect structure, properties, The effect on the properties DES is still unclear needs further investigate. Herein, we carried out systematic investigation into chemical rheological performance DES-water (DES-W) binary systems constructed by combining with varying contents water. results revealed that low levels in had minimal impact its structure but affected fluidity viscosity. Frictional experiments demonstrated DES-W displayed reduced coefficient friction from 0.094 0.025 compared pure DESs manifested outstanding antiwear under high-load condition. This was attributed formation hydration layers, adsorption tribochemical films at tribointerface through reactions. Our findings not only foster design development lubricating materials also expand engineering applications solve wear-related mechanical failures practical application.

Язык: Английский

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The influence of a comb-like polymer functionalized phosphate ionic liquid as a lubricant additive on micropitting

Tribology Transactions, Год журнала: 2025, Номер unknown, С. 1 - 11

Опубликована: Янв. 16, 2025

In this study, a comb-like polymer functionalized phosphate ionic liquid was synthesized and tested for its effectiveness in reducing friction wear, as well capability to prevent micropitting PAO base oil using SRV MPR. It outperforms commercially available liquids. The wear surface characteristics were analyzed optical electron microscopy, changes compound structure on the studied XPS spectroscopy. Through combination of experimental observations theoretical analysis, it is suggested that lubrication mechanism attributed synergistic effect between "soft film" containing polymers formed through adsorption liquid, tribofilm consisting compounds nitrogen-containing organic matrix.

Язык: Английский

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Tris-based protic ionic liquids with multiple adsorption effects enabling excellent anti-wear and anti-corrosion performances

Journal of Molecular Liquids, Год журнала: 2025, Номер unknown, С. 127231 - 127231

Опубликована: Фев. 1, 2025

Язык: Английский

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Design and synthesis of boric acid-based deep eutectic solvents for green liquid superlubricity and bio-lubrication applications

Next Materials, Год журнала: 2025, Номер 8, С. 100572 - 100572

Опубликована: Март 4, 2025

Язык: Английский

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Exploring the distinct lubrication mechanisms of functionalized ionic liquids in air and vacuum: Insights into molecular-level behavior and performance

Applied Surface Science, Год журнала: 2025, Номер unknown, С. 162955 - 162955

Опубликована: Март 1, 2025

Язык: Английский

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Application of deep eutectic solvents in lubrication: A review

Journal of Molecular Liquids, Год журнала: 2025, Номер unknown, С. 127464 - 127464

Опубликована: Март 1, 2025

Язык: Английский

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