Seeding of Supercooled Polyethylene with Extended Chain Crystals

Seeding of supercooled polyethylene melt and solution with extended chain single crystals did not markedly decrease the degree of supercooling necessary to initiate crystal growth.induced with these nuclei.An analysis of the first traces of crystal growth allowed some conclusion about nucleation and growth mechanism.In order to account for the here presented measurement a growing crystal must have a 10,000 to 30,000 A thick surface layer which increases in perfection from the outside to the inside.A differential scanning calorimeter was used for most of the experiments.No extended chain growth was I 0