STUDIES ON RADIATION INDUCED CROSSLINKING OF CIS 1,4—POLYBUTADIENE BY 13C NMR

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^13C NMR spin-lattice relaxation times(T1),line widths,nuclear Overhauser effects(NOE) at room temperature have been measured for radiated cis 1,4-polybutadiene.With the increase of radiation dose T1 is almost invariant,but line width of the methylene(-CH
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