This is an open access article distributed under the CC BY 4.0
Volume 20 article 989 pages: 831-840
The use of mineral and synthetic lubricants will have long-term impact on the environment. Vegetable oil can be an alternative for substitution due to having significant environmental benefits. In addition, vegetable oils also offer renewable resources and have proven to have excellent lubrication performance for automotive and industrial application. Coconut oil is one of vegetable-based oil that would have prospective characteristics to be exploited as bio-lubricant oil. The origin of coconut oil would distinguish its characteristic, hence differentiating its performance as a lubricant. Indonesia is well known as having abundant source of coconut oil which is made with different extraction methods. Extraction method can be envisaged for improving the performance of coconut oil as lubricant oil. Indonesian coconut oils that had been extracted through dry and wet methods would be a primary concern in this study. The prospective of extracting method of coconut oil as lubricant in term of physicochemical and tribological properties will be investigated. hydrogenated coconut oil (HCO), virgin coconut oil (VCO), and refined coconut oil (RCO) are product of coconut oil extracted from wet and dry, respectively. Results indicated that RCO and HCO posed high viscosity index, high ratio unsaturated to saturated fatty acids, and low wear and friction coefficient which are prospective as base fluid in lubricant industries.
This work was funded by the Faculty of Engineering, Universitas Andalas. The author would like to thank the research team who have contributed in conducting the test.
1. Transparency Market Research (TMR) (2015). Lubricants Market (By Product-Mineral oil, Synthetic and bio-based) - Global Industry Analysis, Growth, Trends
2. Batz, W.J. (1998). Lubricants and the environment, Tribology International, 31(1-3), 35-47. DOI: https://doi.org/10.1016/S0301-679X(98)00006-1
3. Horner, D. (2000). Recent trends in environmentally friendly lubricants, J. Synthetic Lubrication, 18(4), 327-347. DOI: https://doi.org/10.1002/jsl.3000180407
4. Salimon, J., Salih, N., and Yousif, E. (2010). Biolubricants: Raw materials, chemical modifica-tions and environmental benefits, Eur,. J. Lipid Sci. Technol., 112, 519-530. DOI: https://doi.org/10.1002/ejlt.200900205
5. Chatra, K.R.S., N.H. Jayadas, and S.V. Kailas (2012). Natural Oil-based Lubricants, In M. Nosonovsky and B. Bhusan (eds.) Green Tribology, Green Energy and Technology, 287-328. Springer-Verlag. Berlin Heidelberg. DOI: https://doi.org/10.1007/978-3-642-23681-5_11
6. R.L. Goyan, R.E. Melley, P.A. Wissner, and W.C. Ong (1998). Biodegradable lubricants, Lubr. Eng., 54(7), 10-17
7. H. H. Masjuki, M. A. Maleque, A. Kubo, T. Nonaka (1992). Palm oil and mineral oil based lubricants - their tribological and emission performance, Tribol. Int., 32, 305-314. DOI: https://doi.org/10.1016/S0301-679X(99)00052-3
8. C. W. Lea (2002). European development of lubricants from renewable sources, Ind. Lubr. Tribol., 54 (6), 268-274. DOI: https://doi.org/10.1108/00368790210445632
9. A. Petterson (2007). High-performance base fluids for environmentally adapted lubricants, Tribol. Int., 40, 638-645. DOI: https://doi.org/10.1016/j.triboint.2005.11.016:
10. S. Z. Erhan, B. K. Sharma, Z. Liu, A. Adhvaryu (2008). Lubricant base stock potential of chemically modified vegetable oils, J. Agric. Food Chem., 56 (19), 8919-8925. DOI: https://doi.org/10.1021/jf801463d
11. S. Asadauskas, J. H. Perez, J. L. Duda (1997). Lubrication properties of castor oil-potential base stock for biodegradable, Lubr. Eng., 53 (12), 35-40.
12. Jayadas, N. H., and K. P. Nair (2006). Coconut oil as base oil for industrial lubricants-evaluation and modification of thermal, oxidative and low temperature properties, Tribology International, 39, 873-878. DOI: https://doi.org/10.1016/j.triboint.2005.06.006
13. Thottackkad, M. V., R.K. Perikinalil, and P. N. Kumarapillai (2012). Experimental evaluation on the tribological properties of coconut oil by the addition of CuO nanoparticles, Int. Journal of Precision Engineering and Manufacturing, 13 (1), 111-116
14. Koshy, C.P., P. K. Rajendrakumar, and M. V. Thottackkad (2015). Evaluation of the tribological and thermophysical properties of coconut oil added with MoS2 nanoparticles at elevated temperatures, Wear, 330-331, 288-308. DOI: https://doi.org/10.1016/j.wear.2014.12.044.
15. Rashin, M. N. and J. Jemalatha (2013). Synthesis and viscosity studies of novel ecofriendly ZnO-coconut oil nanofluid, Experimental Thermal and Fluid Science, 51, 312-318. DOI: https://doi.org/10.1016/j.expthermflusci.2013.08.014
16. Balamurugan, N. Kanagasabapathy, and K. Mayilsamy (2010). Studies on soya bean oil based lubricant for diesel engine, J. Sci. And Industr. Res., 69, 794-797.
17. Marina, A. M., Y. B. Che Man, S. A. H. Nazimah, and I. Amin (2009). Chemical properties of virgin coconut oil, J. Am. Oil Chem. Soc., 86, 301-307. DOI: https://doi.org/10.1007/s11746-009-1351-1
18. Kumar, S. N. (2011). Variability in coconut (Cocos nucifera L.) germplasm and hybrids for fatty acid profile of oil, J. Agriculture and Food Chemistry, 59, 13050-13058. DOI: https://doi.org/10.1021/jf203182d
19. Meier, M. A. R., Metzger, J. O., Schubert, U. S. (2007). Plant oilrenewable resources as green alternatives in polymer science.Chem. Soc. Rev., 36, 1788–1802
20. S. Mia and N. Ohno (2010). Prospect of mustard and coconut oil as environment friendly lubricant for Bangladesh, Proc. Int. Con. Env. Aspects of Bangladesh (ICEAB10), 120-121.
21. Gopala K. A. G., Gaurav R., Ajit S. B., Prasanth K. P. K., and Preeti C. (2010). Coconut oil: Chemistry, production and Its applications - A review, Indian Coconut Journal, 15-27.
22. H. Noureddini, B. C. Teoh, and L. D. Clements (1992). Viscosities of vegetable oils and fatty acids. J. Am. Chem. Soc., 69 (12), 1189-1191. DOI: https://doi.org/10.1007/BF02637677
23. H. Wagner, R. Luther, and T. Mang (2001). Lubricant base fluids based on renewable raw materials their catalytic manufacture and modification, Applied Catalysis A: General, 221, 429-442. DOI: https://doi.org/10.1016/S0926-860X(01)00891-2
24. P. Nagendramma, and S. Kaul (2012). Development of ecofriendly biodegradable lubricant: An overview, Renewable and sustainable Energy Reviews, 16, 764-774. DOI: https://doi.org/10.1016/j.rser.2011.09.002
25. A. Govindapillai, N. H. Jayadas, and M. Bhasi (2009). Analysis of the pour point of coconut oil as a lubricant base stack using differential scanning calorymetry, Lubricant Science, 21, 13-16. DOI: https://doi.org/10.1002/ls.69
26. V. Kostik, S. Memetil, and B. Bauer (2013). Fatty acid composition of edible oils and fats, Journal of Hygienic Engineering and Design, 4, 112-116.
27. G. Biresaw and G. Bantchev (2008). Effect of chemical structure on film-forming properties of seed oils, J. Synthetic Lubrication, 25, 159-183. DOI: https://doi.org/10.1002/jsl.58
28. K. R. Sathwik Chatra, S. V. Kailas, and N. H. Jayadas (2012). Natural oil-based lubricants, in M. Nosonovsky and B. Bhusan (eds.), Green Tribology, Green Energy and Technology, 287-328, Springer-Verlag Berlin Heidelberg. DOI: https://doi.org/10.1007/978-3-642-23681-5_11
29. J.A. Greenwood and J. B. P. Williamson (1965). Contact of nominally flat surfaces, Proc. R. Soc. Lond. A, 295, 300-319. DOI: https://doi.org/10.1098/rspa.1966.0242
30. Hamrock, J. B. and Dowson, D. (1977). Ishothermal Elastohydrodynamic Lubrication of Point Contacts, Part III-Fully Flooded Results, Trans ASME Series F, J. Lubr. Technol., 99(2), 264-276., DOI: https://doi.org/10.1115/1.3453074
31. I.M. Hutching. (2005) , The Chalange of Wear, in Gwidon W. Stackowiak, Wear-Materials, Mechanism and Practice, 1-6,, John Willey & Sons.
32. R. Ishida, R. Tsuboi, and S. Sasaki (2012). Effect of fatty acids on lubricity of vegetable oil, 15th International Conference on experimental mechanics,Porto, Portugal.
33. S.Dizdar (2000). Wear transition of a lubricated sliding steel contact as a function of surface texture anisotropy and formation of boundary layers, Wear 237, 205-210. DOI:https://doi.org/10.1016/S0043-1648(99)00325-7
34. M. T. Siniawski, N. Saniei, B. Adhikari, and L. A. Doezema (2007). Influence of fatty acid compo-sition on the tribological performance of two vegetable-based lubricants, J. Synthetic Lubrication, 24, 101-110. DOI: https://doi.org/10.1002/jsl.32
35. T.Z. Erhan, B. K. Sharma, and J. M. Perez (2006). Oxidation and low temperature stability of vege-table oil-based lubricant, Industrial Crops and Products, 24, 292-299. DOI:https://doi.org/10.1016/j.indcrop.2006.06.008
36. Jayadas N. and Prabhakaran Nair K. (2006). Coco-nut oil as bio lubricant- Study of the anti-wear properties using quantum chemical calculations and tribological test, Proceeding of WTC 2005 World Tribology Congress III, September 12-16, Washing-ton, D. C., USA. DOI: https://doi.org/10.1115/WTC2005-63786
37. Fox N., Tyrer B., and Stochowiak G. (2004). Boun-dary lubrication performance of free fatty acids in sunflower oil, Tribology Letters, Vol. 16, No. 4, 275-281. DOI:https://doi.org/10.1023/B:TRIL.-0000015203.08570.82