摘要
通过聚1-丁烯（PBt）的13C-NMR谱图中对立体结构的实测值与Bernoulli模型计算值比较,表明该体系基本符合Bernoulli模型提出的机理。同时计算出甲苯不溶物、可溶物和空白试样PBt的全同（m）和间同（r）平均链长,并作出r和m连接的分布曲线,3个试样的间同平均链长都接近1,并且分布非常窄,而全同平均链长虽然各不相同但都较长,且分布非常宽,这表明PBt的序列结构为立体嵌段结构。
The measurements of 13 C-NMR spectra showed that the mechanism of 1-butene polymerization with supported Ti catalyst followed Bernoulli model. The average length of segments of r and m connection of soluble, unsoluble and crude PBt was calculated. The distribution curves of r and m connection was drawn. The results showed that the average length of segments of r connection was near to 1 and its distribution was very narrow, while the average length of segments of m connection was larger relatively and its distribution was much wide. The sequence structure of PBt synthesized with supported Ti catalyst was stereo-block structure.
出处
《合成橡胶工业》
EI
CAS
CSCD
北大核心
2002年第6期354-356,共3页
China Synthetic Rubber Industry
