caa a22 4500 465797326 CHVBK 20180323112042.0 cr unu---uuuuu 170327e19901101xx s 000 0 eng 10.1007/BF02540510 doi (NATIONALLICENCE)springer-10.1007/BF02540510 Ng W. Department of Chemistry, University of Malaya, Pantai Valley, 59100, Kuala Lumpur, Malaysia aut A study of the kinetics of nucleation in a palm oil melt [Elektronische Daten] [W. Ng] Nucleation from a supercooled melt of palm oil was studied by optical microscopy and differential scanning calorimetry (DSC). Despite being a multicomponent system, palm oil exhibits a rather simple cooling thermogram with its high- and low-T exotherms exclusively related to the "hard” and "soft” components of the oil. As the "hard” components are being removed, the position of the high-T peak shifts down toward the low-T peak with diminishing peak intensity, while the position of the latter remains virtually unchanged. At 288°K, nucleation in a palm oil melt is instantaneous. Its induction time-temperature curve shows an abrupt discontinuity at 297°K, which demarcates the occurrence of one polymorph from another. Nucleation data fit very well into the Fisher-Turnbull equation. Its larger activation free energy of nucleation is accompanied by lowering of the melting point and an increase in the crystal/melt interfacial free energy as compared to palm stearin. The slow rate of nucleation in palm oil is attributed to intermolecular interaction between its "hard” and "soft” components. AOCS Press, 1990 Nucleation kinetics nationallicence palm oil melt nationallicence Journal of the American Oil Chemists' Society Springer-Verlag 67/11(1990-11-01), 879-882 0003-021X 67:11<879 1990 67 11746 https://doi.org/10.1007/BF02540510 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02540510 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Ng W. Department of Chemistry, University of Malaya, Pantai Valley, 59100, Kuala Lumpur, Malaysia aut NATIONALLICENCE 773 0- Journal of the American Oil Chemists' Society Springer-Verlag 67/11(1990-11-01), 879-882 0003-021X 67:11<879 1990 67 11746 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer