Cooling from 200C to -30C (dashed line). Heating from -30C to 200C (solid line). Owing to the low cooling capacity of the equipment, the cooling could not keep up at temperatures below -6.7°C, resulting in a reduced cooling rate and reaching only -21°C even though the final temperature was set at -30°C. About the dashed line of C10GL (1), the exothermic peak due to type I crystallization is not observed here. Before the second heating, we programmed to maintain the temperature at -30C for 5 min, during which the actual temperature is cooled from -21C to -30C. The exothermic peak due to type I crystallization was observed during this step.