Heterogeneity in polymers as studied by nuclear magnetic resonance
- 1 January 1979
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Faraday Discussions of the Chemical Society
- Vol. 68, 78-86
- https://doi.org/10.1039/dc9796800078
Abstract
A knowledge of the extent to which polymers are heterogeneous is fundamental to a full understanding of their properties. This paper discusses the role of n.m.r. in probing spatial heterogeneity in polymers using two characteristic features of n.m.r.: the short-range nature of the dipole–dipole interaction and the transport of spin energy (spin diffusion) that may occur over many tens of nanometres. The contribution of cross-relaxation is also examined briefly. Several illustrative examples are discussed.Keywords
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