Low-temperature thermal properties of the aqueous solutions of simple aminoalcohols: Finding of peculiarities in 1-amino-2-propanol solutions

Low-temperature heat capacities of confined liquid benzene, implying the behavior of ordinary bulk liquids

“…It is known that, in general, supercooled liquid has larger heat capacity, C p , than crystal [1][2][3][4][5][6][7][8]. This means that the slope of the curve (entropy versus temperature) is steeper than the one for crystal and the entropy of supercooled liquid approaches the value of crystal on cooling.…”

“…This means that the slope of the curve (entropy versus temperature) is steeper than the one for crystal and the entropy of supercooled liquid approaches the value of crystal on cooling. The detail of the approach, however, remains unsolved because real supercooled liquids generally vitrify at the respective glass-transition temperatures, T g , and stop the decrease of the configurational entropy without revealing the equilibrium behavior at further low temperatures [1][2][3][4][5][6][7][8][9][10][11]. In concrete terms, for example, possibilities remain that the liquid entropy approaches the crystalline value linearly with a slope similar to the one above the T g , or asymptotically with gradual small slopes at lower temperatures; the C p behaviors of easily glass-forming substances above their T g values display no decrease in the slope of configurational entropy with decreasing temperature.…”

“…Vitrification is a phenomenon found abundantly in liquids; it occurs in cases without crystallization and is generally understood as a process in which the rate of molecular rearrangement is slowed down and the configurational structure is finally arrested on our experimental timescale with decreasing temperature [2][3][4][5][6][7][8][9][10][11]. The molecular rearrangement process progresses by surmounting a potential barrier through the thermal activation.…”