Figure 9.

(A) Change in heat capacity (Δc_p) per mole of water in the sample and (B) relative width of the glass transition ΔT/T_g as a function of x_LiCl. Broad transparent lines serve as a guide to the eye. The observed trends are similar for all heating rates (see the Supporting Information) but, for simplicity, only the results for 30 and 20 K min^–1 are shown. The definitions of Δc_p and ΔT/T_g are shown in Figure 6. Textbook definitions of Δc_p and ΔT/T_g are not useful for our DSC traces, since no unambiguous end point could be determined due to the exothermic features (polyamorphic transition or cold crystallization) commencing right after the glass transitions. For consistency, the same procedures were applied to the CS. The error estimated for Δc_p is roughly 0.4 J mol^–1 K^–1 and that for ΔT/T_g is ∼0.01. Error bars are omitted for clarity.