Abstract
The effect of cooling and compression rates on the tendency to crystallize/vitrify the canonical glass-forming liquid, propylene carbonate (PC), was studied by using dielectric spectroscopy. Based on constructed time–temperature transformation (TTT) and continuous heating transformation (CHT) diagrams, we have determined the critical scanning rates that allow avoiding crystallization on cooling from the liquid state and reheating of the glassy sample, respectively. In a similar way to isobaric temperature-dependent studies, we have also carried out isothermal high-pressure measurements upon which the crystallization tendency of PC was examined as a function of varying compression and decompression rates (pressures up to 1.3 GPa). We propose time–pressure transformation (TPT) and continuous decompression transformation (CDT) diagrams as the pressure analogs of the TTT and CHT diagrams. Obtained results demonstrate that, qualitatively, one gets the same picture when pressure (instead of the temperature) is ...
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