CORRELATION OF STRUCTURE, MOBILITY, AND MORPHOLOGICAL INFORMATION IN HETEROGENEOUS POLYMER MATERIALS BY 2-DIMENSIONAL WIDELINE-SEPARATION NMR-SPECTROSCOPY

被引：428

作者：

SCHMIDT-ROHR, K ^{[1
]}

CLAUSS, J ^{[1
]}

SPIESS, HW ^{[1
]}

机构：

[1] MAX PLANCK INST POLYMER RES, POSTFACH 3148, W-6500 MAINZ, GERMANY

来源：

MACROMOLECULES | 1992年 / 25卷 / 12期

关键词：

D O I：

10.1021/ma00038a037

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A novel version of the two-dimensional heteronuclear experiment, achieving H-1 wideline separation (WISE), is presented. It allows for the correlation of mobility and structure in organic solids. Differences of molecular dynamics are probed by H-1 wideline shapes, which are separated in the second dimension by C-13 chemical shifts. With a mixing time inserted before cross polarization from H-1 to C-13, H-1 spin diffusion allows one to determine the mobility at interfaces and to measure domain sizes approximately. The technique is demonstrated on poly(styrene)-poly(siloxane) block copolymers and on a blend of poly(styrene) and poly(vinyl methyl ether), where nano-heterogeneity with respect to the mobility is found. The detection of phenyl flips in glassy polymers is also demonstrated.

引用

页码：3273 / 3277

页数：5

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