Unexplored potential of acacia and guar gum to develop bio-based greases with impressive tribological performance: A possible alternative to mineral oil-based greases

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

“…However, the above-mentioned additives have been synthesized using sophisticated techniques incurring huge costs. Polysaccharide gums are biopolymers with excellent prospects in various tribological applications involved in cosmetics, pharmaceuticals, printing, adhesives, textile, oil drilling, food, and, more importantly, lubricants and greases [42][43][44][45][46][47]. The presence of reactive functional groups (carboxyl, hydroxyl, amino) in their structure facilitates easy anchoring over metallic surfaces to form protective lms and is the reason behind their superior tribology [43].…”

“…It is worth mentioning that despite several attempts, only a few eco-friendly greases developed in the past have shown acceptable tribological performance comparable to commercial greases [35,39,42,47].…”

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

“…Polysaccharide gums are biopolymers with excellent prospects in various tribological applications involved in cosmetics, pharmaceuticals, printing, adhesives, textile, oil drilling, food, and, more importantly, lubricants and greases. [42][43][44][45][46][47] The presence of reactive functional groups (carboxyl, hydroxyl, amino) in their structure facilitates easy anchoring over metallic surfaces to form protective films and is the reason behind their superior tribology. 43 Besides better tribology, they are biodegradable, renewable, non-toxic, economical, and widely available.…”

“…48,49 It is worth mentioning that despite several attempts, only a few eco-friendly greases developed in the past have shown acceptable tribological performance comparable to commercial greases. 35,39,42,47 Further, the performance of such greases is hardly ever evaluated on actual bearings. This should be noted as it is well-accepted 5,50 that the complex rolling-sliding contact behavior of the rolling bearings cannot be characterized by any individual assessment of friction, wear, vibration, rheology, or any other grease characteristic.…”

“…It is worth mentioning that despite several attempts, only a few eco-friendly greases developed in the past have shown acceptable tribological performance comparable to commercial greases [35,39,42,47]. Further, the performance of such greases is hardly ever evaluated on actual bearings.…”