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Molecular motions in poly(ethylene-co-norbornene) were studied in a temperature range well below its glass transition point by a few techniques based on the NMR phenomenon. Temperature dependencies of proton spin-lattice relaxation times T1 (at 200MHz and at 30.2MHz), proton spin-lattice relaxation time in the rotating frame T1ρ (at 68kHz) and frequency dispersion of proton spin-lattice off-resonance...
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