. 2023 Aug 25;28(17):6240. doi: 10.3390/molecules28176240

Table 1.

Glass transition temperature, T_g, effective activation energy at T_g and fragility, m, for valsartan, (2:1) Val-Bipy and (1:1) Val-Tri coamorphous systems, obtained by advanced isoconversional method and TSDC measurements.

Sample (Stoichiometry)	Glass Transition Temperature (T_g/°C)	Effective Activation Energy at T_g (kJ mol⁻¹)	Fragility (m)
Valsartan	70 ^a, 67(DSC) ^b, 65(TSDC) ^b	300 ^a, 328(DSC) ^b, 304(TSDC) ^b	46 ^a, 50(DSC) ^b, 47(TSDC) ^b
Val-Bipy (2:1)	62 ^a, 67 ^c	363^a, 376 ^c	57 ^a, 58 ^c
Val-Tri (1:1)	97 ^a, 96 ^c	308 ^a, 369 ^c	44 ^a, 49 ^c

Where: ^a results found in the present study from DSC; ^b reported by Moura Ramos & Diogo [31]; ^c results obtained from TSDC in the present study (see Figure S10 of ESI).