Malaysian Journal of Analytical Sciences Vol 17 No 3
(2013): 414 – 421
Synthesis of Rubber Seed Oil and Trimethylolpropane Based
Biolubricant Base Stocks
(Penghasilan
Stok Asas Biopelincir Berasaskan Minyak Biji Getah dan Trimetilolpropana)
Ainaatul
Asmaa’ Ishak* and Jumat Salimon
School of Chemical
Sciences and Food Technology,
Faculty of Science and
Technology,
Universiti Kebangsaan
Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia.
*Corresponding author: aina_asmaa88@yahoo.com
Abstract
Esters
derived through a chemical combination of vegetable oil with trimethylolpropane
(TMP) have the potential for biolubricants usage due to their biodegradable,
non toxic and environmentally friendly nature. The synthesis of ester was
carried out via esterification of TMP with fatty acid rubber seed oil (FARSO)
for 5 hours of reaction at 150 oC in the present of concentrated
sulphuric acid (2% w/w). A Fourier Transform Infrared Resonance (FTIR) and a
Gas Chromatography equipped with a Flame Ionization Detector (GC-FID) was used
to determine both the presence of the ester carbonyl group (C=O) as well as the
ester composition. The results showed that the esterification process has
increased the oil flash point (310 oC), viscosity indices (283) and
lower the pour point (-40 oC). RSOTMP ester produced has shown
comparative physicochemical properties that plausible it to be used as good
biolubricant base stock oil.
Keywords:
ester, biolubricant; fatty acid rubber seed oil; RSOTMP ester
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