J Chem Phys. 2013 Jul 28;139(4):047101. doi: 10.1063/1.4812929.
This Comment presents thermograms which demonstrate that glass transition temperatures, Tgs, the change in heat capacity, ΔCp, and the quasi-invariant point, (C'g,T'g), of citric-acid/H2O are not consistent with those reported by Lienhard et al. This raises doubts about validity of their estimation of the excess mixing entropy difference, ΔS(l)mix-ΔS(g)mix, at the Tg.
本评论呈现了热图谱，这些图谱表明柠檬酸/H2O 的玻璃化转变温度（Tg）、热容变化（ΔCp）和准不变点（C'g，Tg）与 Lienhard 等人报告的数据不一致。这对他们在 Tg 时估算超额混合熵差（ΔS(l)mix-ΔS(g)mix）的有效性提出了质疑。
