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

被引：1
|
作者：
Pestryaev, E. M. [1 ]
机构：
[1] Ufa State Petr Technol Univ, Ufa 450064, Russia
来源：
POLYMER SCIENCE SERIES A | 2020年 / 62卷 / 06期
关键词：
NUCLEAR-MAGNETIC-RESONANCE; TRANSVERSE RELAXATION FUNCTION; NORMAL-MODE PROCESS; LONG-TIME BEHAVIOR; MOLECULAR-DYNAMICS; DEUTERIUM NMR; PULSED NMR; DIELECTRIC-RELAXATION; POLYETHYLENE NETWORKS; LATTICE-VIBRATIONS;
D O I：
10.1134/S0965545X20060097
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
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.
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页码：779 / 792
页数：14
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