The first observation, according to the best of knowledge, of a high-resolution 17.735-MHz 1 H NMR spectrum of uncured Heva rubber in a CS 2 solution was made in 1957 by Gutowsky et al., ...

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§ NMR Centre, School of Chemical Sciences, University of Auckland Private Bag 92019, Auckland 1142, New Zealand ‡ Polymer Electronics Research Centre, School of Chemical Sciences, University of ...