Cellulose Acetate Sulfate as a Lyotropic Liquid Crystalline Polyelectrolyte: Synthesis, Properties, and Application

Table 3

Thermal characteristics of film specimens of the CAS salts.

Counter-ion (cation)	Volume of hydrated cation 𝑉hydr cm^3/mol [22]	Hydration number; n [22]	endothermic effect					exothermic effect				𝑇20%,°C	𝑇40%,°C
			𝑇𝑖,°C	𝑇𝑝,°C	𝑇𝑓,°C	𝑑𝑚,%	𝐸𝑎, kJ/mol	𝑇𝑖,°C	𝑇𝑝, °C	𝑇𝑓,°C	𝑑𝑚, %
Ca^2+	156.7	10	20	85	180	15	19.7	210	250	255	23	245	267
Li^+	125.9	8	22	85	160	18	24.1	182	197	237	35	177	187
Na^+	109.0	6	25	87	180	15	16.5	185	212	220	29	205	225
K^+								207	215	225	11
	94.4	5	30	95	165	15	15.1	232	250	255	16	215	257