XE-129 NMR AS A PROBE OF POLYMER BLENDS

被引：39
|
作者：
WALTON, JH [1 ]
MILLER, JB [1 ]
ROLAND, CM [1 ]
机构：
[1] USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375
来源：
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 1992年 / 30卷 / 06期
关键词：
NUCLEAR MAGNETIC RESONANCE (NMR) WITH XE-129 AS PROBE OF POLYMER BLENDS; BLENDS; XE-129 AS NMR PROBE OF; RUBBERY POLYMER BLENDS;
D O I：
10.1002/polb.1992.090300602
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The miscibility of two-component polymer blends has been investigated using xenon-129 (Xe-129) nuclear magnetic resonance (NMR) to probe the phase morphology. The chemical shift of Xe-129 dissolved in a given polymer is unique, thus heterogeneous blends with large domain sizes exhibit two Xe-129 NMR lines. When a single resonance is obtained, the data are consistent with miscibility, yielding an upper bound on the domain size. The temperature dependence of the relative solubilities and chemical shifts of Xe-129 dissolved in the pure components may allow a determination of the phase morphology in blends exhibiting a single resonance. The method is used to demonstrate that polychloroprene and 25% epoxidized 1,4-polyisoprene form a miscible blend.
引用
收藏
页码：527 / 532
页数：6
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