Polyesters Based on Linoleic Acid for Biolubricant Basestocks: Low-Temperature, Tribological and Rheological Properties

Abdullah, Bashar Mudhaffar and Zubairi, Saiful Irwan and Huri, Hasniza Zaman and Hairunisa, Nany and Yousif, Emad and Basu, Roma Choudhury (2016) Polyesters Based on Linoleic Acid for Biolubricant Basestocks: Low-Temperature, Tribological and Rheological Properties. PLoS ONE, 11 (3). e0151603. ISSN 1932-6203, DOI https://doi.org/10.1371/journal.pone.0151603.

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Official URL: http://dx.doi.org/10.1371/journal.pone.0151603


Presently, plant oils which contain high percentage of linoleic acid 1 are perceived to be a viable alternative to mineral oil for biolubricant applications due to their biodegradability and technical properties. In order to get biodegradable lubricant, triester derivatives compounds (1-5) were synthesized and characterized. The processes involved were monoepoxidation of linoleic acid 2, oxirane ring opening 3, esterification 4 and acylation 5. The structures of the products were confirmed by FTIR, 1H and 13C-NMR and LC-MS. The results that showed lowest temperature properties were obtained for triester 5, with a pour point value (PP) of -73°C, highest onset temperature (260°C) and lowest volatility at 0.30%. Viscosity index (VI) increased for the ester's synthetic compounds (2, 3, 4, 5), while the PP decreased. This behavior is the result of the increase of the chain length of the branching agents. Triester based linoleic acid has improved properties such as low-temperature and tribological properties. These results will make it feasible for plant oil to be used for biolubricants, fuels in chain saws, transmission oil and brake fluid.

Item Type: Article
Funders: Universiti Kebangsaan Malaysia: (TRGS/1/2014/USM/01/3/4, FRGS/2/2013/TK04/UKM/03/1, GGPM-2013-078, 06-01-02-SF1271 and LAUREATE-2013-002), University of Malaya: (RP024A-14HTM)
Uncontrolled Keywords: Biolubricant; Ester derivative; Fuel; Linoleic acid; Lubricating agent; Mineral oil; Polyester; Unclassified drug; Vegetable oil; Linoleic acid
Subjects: R Medicine
R Medicine > RS Pharmacy and materia medica
Divisions: Faculty of Medicine
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 12 Oct 2017 04:18
Last Modified: 08 Feb 2021 07:55
URI: http://eprints.um.edu.my/id/eprint/17990

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