Effect of nucleating agents on the temperature‐dependent melt crystallization kinetics of poly(1‐butene)

摘要

AbstractThe effect of additives (mostly nucleating agents) on the crystallization rate of isotactic poly(1‐butene) has been investigated by differential scanning calorimetry. Isothermal crystallization half‐times and crystallization temperatures have been measured for polymer‐additive blends. The crystallization temperature and the cooling rate at which the ultimate fraction transformed becomes less than 1 is calculated as a function of nucleation density, and this is used to characterize the effect of the additives on crystallization rate. The relationship between the isothermal crystallization half‐time and the crystallization temperature is also calculated theoretically and is compared with experimental