| 稀土催化丁二烯-异戊二烯共聚物的序列分布 |
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| 引用本文： | 谢德民,孝延文. 稀土催化丁二烯-异戊二烯共聚物的序列分布[J]. 高分子学报, 1982, 0(3): 202-206 |
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| 作者姓名： | 谢德民 孝延文 |
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| 作者单位： | 中国科学院长春应用化学研究所(谢德民)，中国科学院长春应用化学研究所(孝延文) |
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| 摘 要： | 用~(13)C-NMR方法研究了不同稀土元素聚合丁二烯-异戊二烯共聚物的序列分布。定量地求得丁-戊共聚物二元组分布及数均序列长度数据。证明以Nd、Pr及Ce为催化剂的共聚物分布较好地服从Bernoullian模型,以Y、Sm、Dy及Gd为催化剂的共聚物与Bernoullian分布有些偏离。
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| 收稿时间： | 1981-05-30 |
SEQUENCE DISTRIBUTION OF MONOMER UNITS IN BUTADIENE-ISOPRENE COPOLYMER PREPARED WITH LANTHANIDE CATALYSTS |
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| Xie De-min,Xiao Yen-wen. SEQUENCE DISTRIBUTION OF MONOMER UNITS IN BUTADIENE-ISOPRENE COPOLYMER PREPARED WITH LANTHANIDE CATALYSTS[J]. Acta Polymerica Sinica, 1982, 0(3): 202-206 |
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| Authors: | Xie De-min Xiao Yen-wen |
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| Affiliation: | Changchun Institute of Applied Chemistry; Academic Sinica |
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| Abstract: | Monomer sequence distribution of copolymers of butadiene and isoprene prepared with lanthanide complexes LaCl2-C2H5OH-Al(C2H5)2 was determined by 13C-NMR spec-trometry.The dyad distribution and number-average sequence length of these copolymers were quantitatively determined. The results show that sequence distribution of monomer units in copolymers prepared with Nd, Pr and Ce catalysts follow Bernoullian statistical model, while copolymers prepared with Y, Sm, Dy and Gd catalysts show some deviation from it. |
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