EXTENSIONS OF THE AVRAMI EQUATION TO VARIOUS POLYMER CRYSTALLIZATION MODELS

In the reported theoretical research, computer modeling studies of the progress of crystallization in polymer melts have been carried out initially on those systems analyzed by Avrami and then extended to include a number of complications which may be characteristic of real systems, in particular (a) mixed mechanism, (b) volume shrinkage, (c) variable crystalline density, and (d) nonrandom nucleation. It is concluded that the Avrami equation is a reasonable approximation to most of these systems except (c).