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Crosslinking junctions of vulcanized natural rubber analyzed by solid-state NMR spectroscopy equipped with field-gradient-magic angle spinning probe
Authors:Seiichi Kawahara  Oraphin Chaikumpollert  Yoshimasa Yamamoto
Affiliation:a Department of Materials Science and Technology, Faculty of Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
b JEOL Ltd., 1-2-3 Musashino, Akishima, Tokyo 196-8556, Japan
Abstract:Crosslinking junctions of vulcanized natural rubber were analyzed by solid-state NMR spectroscopy equipped with a field-gradient high speed magic angle spinning probe. Resolution of 1H and 13C NMR spectra and correlations between 1H and 13C of the vulcanized natural rubber were investigated by one- and two-dimensional measurements, including inverse correlation measurements. The number of substitution of the carbon atom at the crosslinking junctions was determined by solid-state NMR spectroscopy.
Keywords:NMR   Natural rubber   Crosslinking junctions
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