Citation: ZHOU Zinan, XIE Demin, ZHANG Jianguo, WU Qinyi, FENG Zhiliu. A NEW PEAK (T4) IN THE 13C-NMR SPECTRUM OF POLYBUTADIENE[J]. Chinese Journal of Polymer Science, ;1983, 1(1): 80-82. shu

A NEW PEAK (T4) IN THE 13C-NMR SPECTRUM OF POLYBUTADIENE

Received Date: 1 December 1982

A new peak at 39.0 ppm in the 13C-NMR spectrum of polybutadiene (PBD) was discovered. This peak is assigned to the fourth peak (T4) of trans-1,4-sequence marked with an asterisk as shown in Fig. 3 in the text.The occurrence of T4 carbon nuclei is strongly affected by their neighboring 1,2-units. So long as both contents of trans-1,4- and 1,2-units attain their proper amounts the peak (T4) with appear in the 13C-NMR spectrum of PBD.
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