Zhu Shan-nong, YANG Xiao-zhen. STUDY OF THE ASSIGNMENT ON THE 13C-NMR SPECTRA OF ATACTIC POLYPROPYLENE STEREOISOMERS. [J]. Acta Polymerica Sinica (4):263-267(1981)
DOI:
Zhu Shan-nong, YANG Xiao-zhen. STUDY OF THE ASSIGNMENT ON THE 13C-NMR SPECTRA OF ATACTIC POLYPROPYLENE STEREOISOMERS. [J]. Acta Polymerica Sinica (4):263-267(1981)DOI:
STUDY OF THE ASSIGNMENT ON THE 13C-NMR SPECTRA OF ATACTIC POLYPROPYLENE STEREOISOMERS
The tonelli's r effect and Flory's rotational isomeric state model of polypropylene is employed to calculate the 13C-NMR chemical shifts of methyl carbon in the various ste-reoisomers of atactic polypropylene. The correspondence between calculated and observed chemical shifts difference is close. Some controversial assignments of resonance peaks in literature are discussed.