Chain Heterogeneity in Simulated Polymer Melts: NMR Free Induction Decay and Absorption Line

Retrieving information about the molecular motion of polymer chain in melt from the FID is based on the theoretical assumptions in which the heterogeneity of segmental dynamics and its anisotropy along chain are ignored. This article-the second and conclusive in the series-demonstrates, in detail, the FID calculation for various length chains considering these peculiarities revealed in the previous article. The experimentally observed FID components are assigned to the corresponding fragments of the entangled chain, and reasons for the deviation from theoretical values defined by the chain structure are proposed.