Biogenic palm oil-based greases with glycerol monostearate and soy wax: A rheological and tribological study

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dc.article.number103728
dc.catalogadorgjm
dc.contributor.authorNassef, Belal G.
dc.contributor.authorMoradi, Amirreza
dc.contributor.authorBayer, Gernot
dc.contributor.authorPape, Florian
dc.contributor.authorAbouelkasem, Zeyad A.
dc.contributor.authorRummel, Florian
dc.contributor.authorSchmoelzer, Stefan
dc.contributor.authorPoll, Gerhard
dc.contributor.authorMarian, Max
dc.date.accessioned2025-03-19T18:46:17Z
dc.date.available2025-03-19T18:46:17Z
dc.date.issued2025
dc.description.abstractThe increasing environmental concerns associated with conventional lubricants have led to a growing interest in sustainable alternatives, particularly biogenic grease. This study introduces a novel approach to synthesizing and characterizing fully biodegradable greases using palm oil as the base oil and renewable biothickeners, namely glycerol monostearate (GMS) and soywax (SW). The innovation lies in utilizing the distinct properties of these biothickeners to optimize the grease structure and performance for industrial applications. GMS enhances the consistency and mechanical stability, while SW controls the elasticity and oil bleeding. Rheological analysis shows that GMS exhibits the thickening capabilities at room temperature (RT) to achieve common grease consistencies, while SW enhances elasticity, achieving a unique balance of firmness and flexibility. Thermal analysis indicates that GMS-based greases had higher thermal stability, while SW enhance low-temperature performance. Tribological testing reveals a reduction in friction and wear, with an earlier transition to the mixed lubrication regime compared to a reference commercial grease (CG). Under boundary lubrication, GMSbased samples perform better than the CG, particularly under higher contact pressures. In contrast, SW-based formulations demonstrate better lubrication at lower contact pressures. In fluid friction regimes, almost all biobased samples outperform the CG, showing potential for high-speed applications. When tested in angular contact ball bearings under oscillating motion (a typical moderate temperature application), the bio-greases show decent results in preventing false brinelling. This study highlights the potential of these eco-friendly formulations as a viable alternative to conventional greases.
dc.fechaingreso.objetodigital2025-03-19
dc.format.extent13 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.rineng.2024.103728
dc.identifier.issn2590-1230
dc.identifier.urihttps://doi.org/10.1016/j.rineng.2024.103728
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/102829
dc.identifier.wosidWOS:001391125100001
dc.information.autorucEscuela de Ingeniería; Marian, Max; 0000-0003-2045-6649; 1247429
dc.language.isoen
dc.nota.accesocontenido completo
dc.revistaResults in Engineering
dc.rightsacceso abierto
dc.rights.licenseCC BY 4.0 Attribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectBio-grease
dc.subjectRenewable resources
dc.subjectSustainable lubrication
dc.subjectGreen lubricant
dc.subjectRheology
dc.subjectTribology
dc.subjectOscillating bearings
dc.subject.ddc550
dc.subject.deweyCiencias de la tierraes_ES
dc.subject.ods07 Affordable and clean energy
dc.subject.ods09 Industry, innovation and infrastructure
dc.subject.odspa07 Energía asequible y no contaminante
dc.subject.odspa09 Industria, innovación e infraestructura
dc.titleBiogenic palm oil-based greases with glycerol monostearate and soy wax: A rheological and tribological study
dc.typeartículo
dc.volumen25
sipa.codpersvinculados1247429
sipa.trazabilidadWOS;2025-01-11
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