NMR APPROACH TO THE DYNAMIC SCREENING EFFECT IN HIGHLY ENTANGLED POLYMERS - POLYETHYLENE OXIDE

被引：6

作者：

ADDAD, JPC ^{[1
]}

GUILLERMO, A ^{[1
]}

LARTIGUE, C ^{[1
]}

机构：

[1] INST MAX VON LAUE PAUL LANGEVIN, F-38042 GRENOBLE, FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.74.3820

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The transverse magnetic relaxation of protons linked to entangled polyethylene oxide chains is shown to be strongly related to the existence of a mean entanglement spacing. This is reflected by the residual spin-spin interaction which results from nonisotropic rotations of monomeric units. This standard NMR parameter is derived from a specific treatment of the relaxation; it is shown to be both independent of the chain molecular weight and proportional to the polymer concentration as expected from viscoelastic measurements. © 1995 The American Physical Society.

引用

页码：3820 / 3823

页数：4

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