C. J. Carman, Tanaka, G. J. Ray, R. C. Randall and coworkers have made an exhaustive study of copolymers of ethylene and propylene （EP） with 13C-NMR, including the assignments of all the resonances and the determina...C. J. Carman, Tanaka, G. J. Ray, R. C. Randall and coworkers have made an exhaustive study of copolymers of ethylene and propylene （EP） with 13C-NMR, including the assignments of all the resonances and the determination of monomer sequence distribution. With a view to facilitating the application of our method in 13C-NMR determination in routine analyses, we use the ordinary carbon tetrachloride as solvent and carry out the determinations under ambient temperatures. Although the spectra obtained展开更多
文摘C. J. Carman, Tanaka, G. J. Ray, R. C. Randall and coworkers have made an exhaustive study of copolymers of ethylene and propylene （EP） with 13C-NMR, including the assignments of all the resonances and the determination of monomer sequence distribution. With a view to facilitating the application of our method in 13C-NMR determination in routine analyses, we use the ordinary carbon tetrachloride as solvent and carry out the determinations under ambient temperatures. Although the spectra obtained
