Biolubricants 2013
DOI: 10.1533/9780857096326.249
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Chemical transformations of renewable lubricant feedstocks

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Cited by 11 publications
(18 citation statements)
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References 234 publications
(300 reference statements)
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“…Previous studies have disclosed that the genetic engineering of the fatty acid profile of oils, straight addition of antioxidants, viscosity modifiers, and PP depressant to vegetable oils are not as propitious as chemical modification about improving chemical and wide temperature range stability of the VOs. Transformation of the fatty acid chain triggers a balance between the subsequent criteria: performance (tribological properties), stability towards oxidation, low‐temperature behaviour, biodegradability, and cost 134,135 . Currently, only a few modification reactions are industrially applicable due to appropriate highly selective catalysts and for cost purposes.…”
Section: Chemical Modification Of Oils For Biolubricants Synthesismentioning
confidence: 99%
“…Previous studies have disclosed that the genetic engineering of the fatty acid profile of oils, straight addition of antioxidants, viscosity modifiers, and PP depressant to vegetable oils are not as propitious as chemical modification about improving chemical and wide temperature range stability of the VOs. Transformation of the fatty acid chain triggers a balance between the subsequent criteria: performance (tribological properties), stability towards oxidation, low‐temperature behaviour, biodegradability, and cost 134,135 . Currently, only a few modification reactions are industrially applicable due to appropriate highly selective catalysts and for cost purposes.…”
Section: Chemical Modification Of Oils For Biolubricants Synthesismentioning
confidence: 99%
“…The sesame oil is a triglyceride, composed of a polar part, which is constituted by ester groups, which give it a greater affinity to metal surfaces and therefore an improvement in lubricating power [19]. This occurs because the polar heads form a mono layer with the non-polar end of the fatty acids thus creating a layer resistant to contact with the metal surface; the apolar or hydrocarbon chains of sesame oil (7-12% Palmitic, 0-0.5% Palmitoleic, 3.5-6% Stearic, 35-50% Oleic, 35-50% Linoleic, 0-1% Linolenic and 0-1% Eicosenoic acids [20] create an anti rub or slippery surface that decreases metal-metal contact [21]. Polyethylene wax has a molecular weight between 2000-8000 with a slightly branched structure [22], which is why there is the interaction between the polar heads and the branched chains of the polyethylene wax, decreasing the metalmetal contact and therefore the resulting fingerprint diameter.…”
Section: A Preventive Wear Testing (Pw)mentioning
confidence: 99%
“…Las cabezas polares de las cadenas de ácidos grasos se unen a las superficies metálicas mediante un proceso de adsorción que permite la formación de una película de mono capa con el extremo no polar de los ácidos grasos sobresaliendo lejos de la superficie del metal. Las cadenas hidrocarbonadas de los ácidos grasos ofrecen una superficie de deslizamiento que evita el contacto directo de metal a metal (Bart et al, 2013). De esta manera, la presencia de las moléculas adsorbidas reduce el coeficiente de fricción.…”
Section: Ensayos De Desgaste Preventivo (Dp)unclassified
“…El aceite de ajonjolí tiene mejor desempeño en condiciones de extrema presión que el aceite mineral 360; es decir, posee mayor poder lubricante. El aceite vegetal está constituido por moléculas de alta polaridad que le permiten interacciones más fuertes con las superficies lubricadas y por tanto mayor capacidad de adsorción que inhibe el contacto de metal a metal (Kabuya et al, 1995;Bart et al, 2013). En la fig.…”
Section: Propiedades De Presión Extrema (Pe)unclassified
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