Polymers are one of the most important discoveries made during the twentieth century. At present we have many kinds of polymer materials with various physical properties and chemical properties. These are due to the vitality of polymer research and development of a diversity of interests on polymer materials. In order to develop new polymer materials, polymer design has been done on the basis of advanced polymer science and technology. The properties of polymers are closely related to their structures. For this, the establishment of methods for determining the structures is very important for obtaining reliable polymer design and for developing new advanced polymers. Since the first observation of a high-resolution 1 H NMR spectrum of uncured Heva rubber in CS2 solution in 1957 by Gutowsky et al., 1 high-resolution NJv1R spectroscopy has developed to become the most
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