Zhu Shan-nong, YANG Xiao-zhen. STUDY OF THE ASSIGNMENT ON THE 13C-NMR SPECTRA OF ATACTIC POLYPROPYLENE STEREOISOMERS[J]. Acta Polymerica Sinica, 1981,(4):263-267.
Zhu Shan-nong, YANG Xiao-zhen. STUDY OF THE ASSIGNMENT ON THE 13C-NMR SPECTRA OF ATACTIC POLYPROPYLENE STEREOISOMERS[J]. Acta Polymerica Sinica, 1981,(4):263-267.DOI:
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.