Synthesis and Frictional Characteristics of Bio-Based Lubricants Obtained from Fatty Acids of Castor Oil

被引：13
|
作者：
Flexa Ribeiro Filho, Paulo Roberto Campos [1 ,2 ]
do Nascimento, Matheus Rocha [1 ]
Otaviano da Silva, Silvia Shelly [1 ]
Tavares de Luna, Francisco Murilo [1 ]
Rodriguez-Castellon, Enrique [3 ]
Cavalcante Jr, Celio Loureiro [1 ]
机构：
[1] Univ Fed Ceara, Dept Engn Quim, Grp Pesquisa Separacoes Adsorcao GPSA, Campus Pici, BR-60455760 Fortaleza, Brazil
[2] Univ Estadual Maranhao, Dept Engn Mecan, BR-65055310 Sao Luis, Brazil
[3] Univ Malaga, Fac Ciencias, Dept Quim Inorgan Cristalog & Mineral, Campus Teatino, Malaga 29071, Spain
来源：
LUBRICANTS | 2023年 / 11卷 / 02期
关键词：
tribology; biolubricant; oxirane ring opening; VEGETABLE-OIL; BIOLUBRICANT PRODUCTION; TRIBOLOGICAL BEHAVIOR; CHEMICAL-MODIFICATION; VISCOSITY; ESTERIFICATION; PERFORMANCE;
D O I：
10.3390/lubricants11020057
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The depletion of oil reserves and concerns about the environmental impact of the use and incorrect disposal of mineral lubricants have been promoting the development of bio-based lubricants. In this study, biolubricants obtained from fatty acids of castor oil were synthesized by esterification (>wt.%93), epoxidation (>wt.%92), and oxirane ring opening reactions using water (>wt.%92) or 2-ethylhexanol (>wt.%94) as nucleophilic agents. The frictional characteristics of the synthesized samples were obtained through tribological tests performed in a four-ball tester and compared with a commercial mineral oil. The sample obtained through oxirane ring opening with water showed the best frictional performance (FC = 0.0699 +/- 0.0007) among the prepared samples, with equivalent wear rate (WSD = 281.2 +/- 5.54 mu m) and ca. 20% lower friction coefficient when compared to the commercial mineral oil, indicating its great potential for replacing mineral fossil oils.
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页数：12
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