Mixing phase behavior of tripalmitin and oleic-rich molecular compound-forming triacylglycerols
| Autor: | Laura Bayés-García, Jorge Macridachis, Teresa Calvet |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Polymorphism (Crystallography)
Crystallography Chemistry General Chemical Engineering Cristal·lografia Analytical chemistry Polimorfisme (Cristal·lografia) 02 engineering and technology General Chemistry X-rays diffraction 021001 nanoscience & nanotechnology Industrial and Manufacturing Engineering chemistry.chemical_compound 020401 chemical engineering Phase (matter) Tripalmitin Molecule 0204 chemical engineering 0210 nano-technology Difracció de raigs X Mixing (physics) |
| Zdroj: | Dipòsit Digital de la UB Universidad de Barcelona |
| Popis: | The binary phase behavior of triacylglycerol (TAG) mixtures constituted by PPP (tripalmitin) and either POP (1,3-dipalmitoyl-2-oleoyl-glycerol), OPO (1,3-dioleoyl-2-palmitoyl-glycerol), or MCPOP/OPO (molecular compound formed by POP/OPO at a 1:1 concentration ratio) was determined by differential scanning calorimetry (DSC), synchrotron (SR-) and laboratory-scale X-ray diffraction (XRD). Steric hindrance due to saturated-unsaturated acyl chain interactions and differences in the thermal stability of TAGs seemed to dictate the independent polymorphic crystallization and transformation observed under kinetic conditions, as well as the very asymmetric eutectic-type phase diagrams obtained from the study of thermodynamically stabilized PPP/POP, PPP/OPO, and PPP/MCPOP/OPO mixtures. Moreover, the solid integration determined for MCPOP/OPO in the βPPP crystalline phase (20-25%), halfway between that of OPO ( |
| Databáze: | OpenAIRE |
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