RT Journal Article
T1 Synthesis and Frictional Characteristics of Bio-Based Lubricants Obtained from Fatty Acids of Castor Oil
A1 Paulo Roberto, Campos Flexa Ribeiro Filho
A1 Rocha do Nascimento, Matheus
A1 Otaviano da Silva, Silvia Shelly
A1 Murilo Tavares de Luna, Francisco
A1 Rodríguez-Castellón, Enrique
A1 Loureiro Cavalcante, Célio
K1 Quimica Inorgánica
AB 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 μm) and ca. 20% lower friction coefficient when compared to the commercial mineral oil, indicating its great potential for replacing mineral fossil oils.
PB IOAP-MDPI
YR 2023
FD 2023-01-31
LK https://hdl.handle.net/10630/26092
UL https://hdl.handle.net/10630/26092
LA eng
NO Campos Flexa Ribeiro Filho, P.R.; Rocha do Nascimento, M.; Otaviano da Silva, S.S.; Tavares de Luna, F.M.; Rodríguez-Castellón, E.; Loureiro Cavalcante, C., Jr. Synthesis and Frictional Characteristics of Bio-Based Lubricants Obtained from Fatty Acids of Castor Oil. Lubricants 2023, 11, 57. https://doi.org/10.3390/lubricants11020057
NO We thank CNPq (Conselho Nacional de Pesquisa e Desenvolvimento Científico) Projects: 304950/2019-0 (Tavares de Luna, F.M.), 309046/2018-1 (Loureiro Cavalcante, C., Jr.) and FUNCAP (Fundação Cearense de Apoio ao Desenvolvimento Científico e Tecnológico) Project E1-0079-0004301 for financial support for this study. Ribeiro-Filho thanks the FAPEMA (Fundação de Amparo à Pesquisa e ao Desenvolvimento Científico e Tecnológico do Maranhão) Project 01131/18 (Campos Flexa Ribeiro Filho, P.R.) and Universidade Estadual do Maranhão (UEMA) for financial support. E.R.-C. thanks Junta de Andalucía, project P20-00375 and FEDER funds. Partial funding for open access charge: Universidad de Málaga
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 21 ene 2026