用于摩擦学应用的生物基芳香族离子液体的结构与特性之间的关系

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2024-10-24 DOI:10.1016/j.triboint.2024.110353

Md Hafizur Rahman , Ashlie Martini , Pradeep L. Menezes

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引用次数: 0

摘要

本研究考察了六种含三己基十四烷基或三丁基十四烷基鏻阳离子和糖精酸根、水杨酸根或苯甲酸根阴离子的鏻基室温离子液体（PRTILs），并获得了将其阳离子链长度、阴离子环尺寸和接触角与摩擦学特性相关联的特征参数。与含有三丁基十四烷基鏻阳离子的 PRTIL 相比，含有三己基十四烷基鏻阳离子的 PRTIL 具有更低的摩擦系数（COF）和磨损率，这种趋势归因于额外的亚甲基基团提供了更低的接触角。无论使用哪种阳离子，含有蔗糖酸阴离子的 PRTIL 都比单环阴离子表现出更低的 COF 和磨损，这是因为蔗糖酸的双环结构和硫促进了低剪切强度三膜的形成。总之，这项研究揭示了 PRTIL 的界面机制，可用于确定具有最佳摩擦学性能的阴阳离子组合。

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Relationship between structure and properties of bio-based aromatic ionic liquids for tribological applications

This study examined six phosphonium-based room-temperature ionic liquids (PRTILs) having trihexyltetradecyl- or tributyltetradecyl-phosphonium cations with saccharinate, salicylate, or benzoate anions, and obtained a feature parameter to correlate their cationic chain length, anionic ring size, and contact angle with tribological properties. PRTILs with trihexyltetradecyl-phosphonium cations had lower coefficient of friction (COF) and wear than PRTILs with tributyltetradecyl- phosphonium cations, a trend attributed to the additional methylene groups providing lower contact angle. For either cation, PRTILs with the saccharinate anion exhibited much lower COF and wear than single-ring anions, due to the formation of a low-shear-strength-tribofilm facilitated by the double-ring structure and sulfur of saccharinate. Overall, this study revealed PRTIL interfacial mechanisms that can be used to identify anion-cation combinations with optimal tribological performance.

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来源期刊

Tribology International 工程技术-工程：机械

CiteScore

10.10

自引率

16.10%

发文量

627

审稿时长

35 days

期刊介绍： Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International. Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.