Development of eco-friendly nano-greases based on vegetable oil: An exploration of the character via structure

Saxena, Ankit; Kumar, Deepak; Tandon, N.

doi:10.1016/j.indcrop.2021.114033

Cited by 18 publications

(9 citation statements)

References 70 publications

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“…Figure 9 Consistency of newly developed gels/greases [13]. Lower concentration nanoparticles can improve the strength of the microstructure of the grease because of the intermolecular force.…”

Section: Nano Bio-grease (Vegetable Grease)mentioning

confidence: 97%

“…Figure 10 Diagram illustration [13]. For other nanoparticles, the bio-oil also shows better performance.…”

Section: Nano Bio-grease (Vegetable Grease)mentioning

confidence: 98%

“…See Figure 9. By adding nano CaCO3 into vegetable grease, the consistency of the greases will increase when the concentration of nanoparticles is 0.5% or 1%, and the consistency of the greases increases [13].…”

Section: Nano Bio-grease (Vegetable Grease)mentioning

confidence: 99%

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Nanoparticle Additives for Improving Lubricant Performance

Ye¹

2022

HSET

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The lubricant is an important industrial product widely used in vehicles and other machines. The main purpose of a lubricant is to reduce friction loss and save energy. However, with the development of the vehicle, the appearance of electrical vehicles, for example, and machines, lubricants need to satisfy more demands. Normally, this was fixed by adding additives. Nanoparticles are one of the best additives because they can efficiently reduce friction loss and provide a more useful function. But nanoparticles may form sedimentation in lubrication, which will increase friction loss and cause damage. Common methods like stirring, ball milling, and chemical methods are used in lab production to keep particles stable in lubricant. All those methods can form relatively stable samples of nano lubricants, but it is still hard for industrial manufacturers because of the technology blank and high cost. Nano lubricant is a potential market and can save more energy in the future.

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Section: Nano Bio-grease (Vegetable Grease)mentioning

confidence: 97%

“…Figure 10 Diagram illustration [13]. For other nanoparticles, the bio-oil also shows better performance.…”

Section: Nano Bio-grease (Vegetable Grease)mentioning

confidence: 98%

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Nanoparticle Additives for Improving Lubricant Performance

Ye¹

2022

HSET

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“…In contrast, the lithium and calcium commercial greases display a fibrous network (wrinkled microstructure) of different entanglement densities representative of different structural strengths. [64][65][66] Figure 4(i) and (j) display the microstructures of the formulated greases containing gums. In both GA-based and GG-based greases, the particles are observed embedded in the entanglements of organoclay.…”

Section: Dynamic Performance Assessment In Rolling Bearingmentioning

confidence: 99%

Dynamic performance of newly developed environmentally friendly greases containing polysaccharide gums in rolling bearing

Saxena,

Kumar,

Tandon

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The present study explores the performance of novel vegetable oil-based greases containing polysaccharide gums as additives. Two series of greases with varying concentrations of gum acacia (GA) and guar gum (GG) are evaluated in a rolling bearing at various speeds and loads. The vibrations and shock pulse measurements (SPM) quantified the tribo-dynamics of the developed greases against two commercial greases used as the benchmark. The vibration and SPM assessment suggest that the newly developed eco-friendly greases are at par with the commercial ones; the performance varies with the concentration and type of gum. Where a cumulative effect of rheology and gum size seems to influence the vibrations, the entrainment of gums in the contact zone governs the SPM carpet values. The developed greases show great prospects as a sustainable, potential, and commercial alternative to existing environmentally unfriendly greases.

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“…Since the double bonds in the fatty acid chains in vegetable oils quickly react with oxygen, and a high content of double bonds is found in vegetable oils, such as sunflower, soybean, olive, linseed, and palm. The development of oleogels to formulate eco-friendly semi-solid lubricants based on nanoclay such as sepiolite and organo-montmorillonite with castor and soybean oils have been reported [ 25 , 26 , 27 ]. Particularly, the effect of the thickener concentration on the rheological, chemical, thermal and tribological properties, of these systems have been studied.…”

Section: Introductionmentioning

confidence: 99%

Impact of Vegetable Oil Type on the Rheological and Tribological Behavior of Montmorillonite-Based Oleogels

Martín-Alfonso

Rubio‐Valle

Hinestroza

et al. 2022

Gels

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We formulated and characterized oleogels based on montmorillonite clay and vegetable oils that could serve as eco-friendly semi-solid lubricants. In particular, we studied the influence of the physical-chemical properties of olive, castor, soybean, linseed, and sunflower oils on the rheological, chemical, thermal, and tribological properties of the semi-solid lubricants. We prepared the oleogels via the highly intensive mixing of vegetable oils with clay at a concentration of 30 wt.%. The oleogels exhibited shear-thinning, thixotropy, structural recovery, and gel-like behavior commonly related to that of a three-dimensional network. The results were corroborated via XRD measurements showing the presence of intercalated nanoclay structures well-dispersed in the vegetable oil. Empirical correlations between the content of saturated (SFAs), unsaturated (UFAs), mono-unsaturated (MUFAs) and poly-unsaturated (PUFAs) fatty acids and the plateau modulus of the aerogels were found. From these experimental results, we can conclude that the fatty acid profile of the vegetable oils exerts an important influence on the rheological and tribological properties of resulting clay and vegetable oil oleogels.

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Development of eco-friendly nano-greases based on vegetable oil: An exploration of the character via structure

Cited by 18 publications

References 70 publications

Nanoparticle Additives for Improving Lubricant Performance

Nanoparticle Additives for Improving Lubricant Performance

Dynamic performance of newly developed environmentally friendly greases containing polysaccharide gums in rolling bearing

Impact of Vegetable Oil Type on the Rheological and Tribological Behavior of Montmorillonite-Based Oleogels

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