Palm stearin and palm kernel olein tend to crystallise with an Avrami exponent of three and two, respectively.
From the Avrami values observed, the crystallisation process of palm stearin was instantaneous heterogeneous nucleation with spherulitic growth, while palm kernel olein was plate-like from instantaneous nuclei.
Blends of palm stearin-palm kernel olein crystallised with Avrami exponent of two and three depending on the major component of the blend and the crystallisation temperature.
At 20 C, the crystallisation process is mainly due to the palm stearin as palm kernel olein did not crystallise at such temperature.
The isothermal crystallisation of palm stearin and palm kernel olein blends was dependent on the concentration of palm stearin and the crystallisation temperatures or the supercooling.