Crystallisation and Melting Behavior of Methyl Esters of Palm Oil
Cheng Sit Foon, Yung Chee Liang, Noor Lida Habi Mat Dian, Choo Yuen May, Chuah Cheng Hock & Ma Ah Ngan
American Journal of Applied Sciences, Volume 3, Issue 5, pp. 1859–1863 · doi.org/10.3844/ajassp.2006.1859.1863
Abstract
The methyl esters of palm oil, which consists of saturated and unsaturated esters (0.6 to 95.9% unsaturation) of the C12 to C18 fatty acids, solidify at the two temperature ranges, -52 to -45°C and -24 to 21°C, when the esters are cooled. When the esters are heated, they melt at two distinct temperatures, -25 and -33°C and a broad peak at -9 to 28°C. The heating thermograms also showed an exothermic crystallisation peak in between two endothermic melting peaks, indicating the occurrence of re-crystallisation of low melting methyl esters into higher melting point crystal and then melt again at higher temperature.
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Foon, C. S., Liang, Y. C., Dian, N. L. H. M., May, C. Y., Hock, C. C. & Ngan, M. A. (2006). Crystallisation and Melting Behavior of Methyl Esters of Palm Oil. American Journal of Applied Sciences, 3(5), 1859–1863. https://doi.org/10.3844/ajassp.2006.1859.1863
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