Choline amino acid ionic Liquids: A novel green potential lubricant

被引：27
作者：
Li, Yuting [1 ]
Yang, Fan [1 ]
Li, Yuan [1 ]
Cai, Meng [2 ]
Li, Hao [1 ]
Fan, Xiaoqiang [1 ]
Zhu, Minhao [1 ,2 ]
机构：
[1] Southwest Jiaotong Univ, Sch Mat Sci & Engn, Key Lab Adv Technol Mat, Minist Educ, Chengdu 610031, Peoples R China
[2] Southwest Jiaotong Univ, Sch Mech Engn, Tribol Res Inst, Chengdu 610031, Peoples R China
来源：
JOURNAL OF MOLECULAR LIQUIDS | 2022年 / 360卷
基金：
中国国家自然科学基金;
关键词：
Choline amino acid ionic liquids; Anionic structure; Thermal-physical properties; Lubrication regime; Friction-heat; TRIBOLOGICAL PROPERTIES; PHOTOELECTRON-SPECTROSCOPY; IRON; FRICTION; BEHAVIOR; MODEL; ADDITIVES; AMMONIUM; WEAR; OIL;
D O I：
10.1016/j.molliq.2022.119539
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Given the depletion of global energy and crisis of environmental pollution, the social demand for lubricants concerning green and socioeconomic benefits is becoming stronger. Herein, a series of eco-friendly, non-corrosive and cost-effective choline amino acid ionic liquids ([Ch][AA]) ILs were synthesized. Among the five [Ch][AA] ILs, long-alkyl-chain and guanidyl group-containing ILs display superior wettability, kinematic viscosity and load-carrying property. Regulation of tribological behavior is achieved through the assembly of anionic structure. Additionally, various friction conditions govern the lubrication regime of [Ch][AA] ILs. Concurrently, the friction-heat is predicted according to the thermal-physical properties. Furthermore, lubrication performance of [Ch][AA] ILs is comparable to polyalphaolefin oil (PAO 40) in various lubrication regime, which are attributed to the resulting thermal-physical properties and physical adsorption tribofilms. This work not only perfects the lubricating system of the [Ch][AA] ILs, but also is of great significance to elucidating the applicable conditions of desired [Ch][AA] ILs lubricants. (C) 2022 Elsevier B.V. All rights reserved.
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页数：10
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