Citation: YAN Xin, HU Jianzhi, YAO Shuren, YE Chaohui, ZHANG Baozhen. SOLID-STATE HIGH RESOLUTION NMR STUDY ON POLY (2, 6-DIMETHYL-1, 4-PHENYLENE OXIDE)[J]. Chinese Journal of Polymer Science, ;1995, 13(3): 252-258. shu

SOLID-STATE HIGH RESOLUTION NMR STUDY ON POLY (2, 6-DIMETHYL-1, 4-PHENYLENE OXIDE)

Received Date: 7 March 1994

Experiments including 13C spin-lattice relaxation,13C heteronuclear dipolar dephasing and1H spin diffusion are performed on poly (2, 6-dimethyl-1, 4-phenylene oxide) (PPO). Theresults show that the rotation of the methyl groups in solid PPO is partially restricted, whichresults in a surprisingly efficient spin diffusion between the aromatic proton and methyl protoncharacterized by a diffusion time of 150μs. The results also show that the aromatic ring insolid PPO is rigid and twisted, which causes all aromatic carbons to be chemically unequivalent.
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