Characterization and Thermal Stability of Polymorphic Forms of Synthesized Tristearin
2002
Oh, J.H. | McCurdy, A.R. | Clark, S. | Swanson, B.G.
The polymorphic characteristics and thermal stability of α, β′, and β forms of synthesized tristearin were studied using X-ray diffractometry (XRD), differential scanning calorimetry (DSC), polarized light microscopy (PLM), and scanning electron microscopy (SEM). Polymorphic forms of α, β′, and β were induced from tristearin melts with increasing temperatures and times. Solid-solid and melt-mediated polymorphic transitions of tristearin occurred predominantly during slow heating rates and rapid heating rates in the DSC, respectively. The stability of α and β forms of tristearin were dependent on storage temperatures. As storage temperatures increased, the rate of polymorphic transitions from α to β and β′ to β forms of tristearin increased.
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