dc.contributor.author | Jia, Tianguang | |
dc.date.accessioned | 2017-12-18T17:15:44Z | |
dc.date.available | 2017-12-18T17:15:44Z | |
dc.date.issued | 2017-12-18T17:15:44Z | |
dc.identifier.uri | http://hdl.handle.net/10222/73544 | |
dc.description.abstract | A suspension of tristearin (SSS) crystals crystallized from 10% solution in dodecane (non-polar solvent), was studied using DSC (differential scanning calorimetry), Rheology, PLM (polarized light microscopy), and XRD (x-ray diffraction). Temperatures of -5, 0, 5, 12, 20, 28, and 35 °C, and shear rates of 0.9, 9, 90, and 900 s-1 were explored. DSC cooling rates of 1, 5, 10, and 15 C°/min showed two crystallization events (polymorphic changes). Onset temperatures (51.7 °C) suggests that the SSS molecules cluster in the liquid, and crystallize in the α form (54.1 °C). The viscosity from rheology (10-3 to 10-1 Pa·s) was shear thinning, with “n” of 0.4 to 0.6. The PLM flow micrographs showed segregation of the suspended crystals. The XRD showed that suspended β crystals increased their d-spacing 6 pm for 0.364 nm, and 2.5 pm for 0.383 nm (-5 °C to 35 °C). This is consistent with undiluted TAGs. | en_US |
dc.language.iso | en | en_US |
dc.subject | Wide-Angle X-Ray Diffraction | en_US |
dc.subject | Tristearin | en_US |
dc.subject | Crystallization | en_US |
dc.subject | Solution | en_US |
dc.title | CRYSTALLIZATION OF TRISTEARIN FROM ITS SOLUTION IN DODECANE | en_US |
dc.date.defence | 2017-12-05 | |
dc.contributor.department | Department of Process Engineering and Applied Science | en_US |
dc.contributor.degree | Master of Science | en_US |
dc.contributor.external-examiner | Dr. Andrew MacIntosh | en_US |
dc.contributor.graduate-coordinator | Dr. Suzanne Budge | en_US |
dc.contributor.thesis-reader | Dr. Suzanne Budge | en_US |
dc.contributor.thesis-supervisor | Dr. Gianfranco Mazzanti | en_US |
dc.contributor.ethics-approval | Not Applicable | en_US |
dc.contributor.manuscripts | Not Applicable | en_US |
dc.contributor.copyright-release | Not Applicable | en_US |