Thermal analysis of failed‐batch palm oil by differential scanning calorimetry
Y. B. Che Man, P. Z. Swe
Journal of the American Oil Chemists Society
Abstract
Abstract Thermal behavior of palm oil samples drawn from the batch crystallizers that failed during crystallization and of a control oil that was drawn from a batch that produced good crystallization were analyzed by differential scanning calorimetry under constant heating and cooling conditions. Four polymorphs—β’ 2 , α, β’ 1 , and β 1 —were observed, and their temperatures were tabulated. A rapid and sudden surge of heat demand was observed for samples from failed crystallizers. Less supercooling values were obtained from the control oil compared to the higher values for samples from failed crystallizers. In crystallization thermograms, a sharp high‐temperature exotherm (high‐T peak) and a broad low‐temperature exotherm (low‐T peak) were observed. Low‐T peaks were found almost invariably stationary at −5.1 to −5.6°C, and high‐T peaks varied depending on the saturation level of the oil. A new peak, sandwiched between the high‐T and low‐T peaks, was observed for the control oil.
Extracted Claims
8 claims extracted from this paper into the knowledge graph
palm oil observed four polymorphs—β’ 2, α, β’ 1, and β 1
“Four polymorphs—β’ 2, α, β’ 1, and β 1—were observed”
high-T peaks varied depending on the saturation level of the oil
“high-T peaks varied depending on the saturation level of the oil.”
failed crystallizers observed higher supercooling values
“Less supercooling values were obtained from the control oil compared to the higher values for samples from failed crystallizers.”