Isoconversional approach to evaluating the hoffman-lauritzen parameters (U~* and K_g) from DSC data on nonisothermal melt crystallization

摘要

Differential scanning calorimetry (DSC) has been extensively used for studying overall rates of polymer crystallization. The macroscopic kinetics of isothermal crystallization are usually described by the Avrami equation a = 1 - exp(-kt~m) (1) where a is the extent of conversion from the amorphous (liquid or solid) to crystalline phase, m is the Avrami exponent that is associated with the crystallization mechanism and k is the overall rate constant.