From Palm Triglycerides to Performance-Engineered Fluids: Molecular Design, Green Tribology, Nano-Additives, Oxidation Control, and Commercial Readiness of Palm-Based Biolubricants-A Critical Review
Loso Judijanto
ABSTRACT
Industrial lubrication sits at the intersection of machinery reliability, energy efficiency, resource use, and environmental protection. Palm oil and its derivatives represent promising renewable feedstocks for industrial biolubricants because their ester-rich molecular structures provide strong surface affinity and favorable lubricity, while an established oleochemical industry offers multiple pathways for molecular transformation. However, native palm oils cannot simply replace petroleum lubricants across industrial applications because oxidative degradation, temperature-dependent rheology, low-temperature behavior, hydrolytic stability, additive compatibility, and severe-contact performance remain important constraints. This critical qualitative literature review synthesizes research published principally between 2020 and 2026 to examine how palm oil, palm olein, palm kernel oil, palm stearin, palm fatty acid distillate, fatty-acid esters, polyol esters, epoxidized derivatives, and estolides can be converted into performance-engineered lubricating fluids. The analysis integrates molecular structure-property relationships, chemical modification, antioxidant engineering, tribochemical mechanisms, nano-additives, and application-specific requirements. Particular attention is given to hydraulic systems, bearings, metalworking, refrigeration, agricultural machinery, marine applications, and emerging electric-vehicle drivetrains. The review argues that commercial viability depends not on biodegradability alone but on matching molecular architecture and formulation to specific operating environments, followed by accelerated ageing, component validation, standards compliance, life-cycle assessment, and techno-economic qualification. A technology-readiness framework is proposed for progressing palm-derived lubricants from promising laboratory formulations toward high-performance industrial fluids.
