Zhao Fang-ru, Su Hui-wen, Su Bang-ying, ZHANG Shui-zhen, Wang Chang-jing. STUDY OF LONG-CHAIN BRANCHING IN POLYBUTADIENE BY 13C-NMR SPECTROMETRY. [J]. Acta Polymerica Sinica (3):225-230(1982)
DOI:
Zhao Fang-ru, Su Hui-wen, Su Bang-ying, ZHANG Shui-zhen, Wang Chang-jing. STUDY OF LONG-CHAIN BRANCHING IN POLYBUTADIENE BY 13C-NMR SPECTROMETRY. [J]. Acta Polymerica Sinica (3):225-230(1982)DOI:
STUDY OF LONG-CHAIN BRANCHING IN POLYBUTADIENE BY 13C-NMR SPECTROMETRY
The long chain branching in polybutadienes and their hydrogenated samples were studied by 13C-NME spectrometry.Two kinds of branching structures are suggested. For samples polymerized from Ni and Co catalysts systems the branching point is on the a-methylene group of the Cis-1
4 double bond. For samples polymerized from Ni+Mo catalysts systems
branching point is formed through the opening of the double bond of 1