| 异丙醇氧锂-正丁基锂-丁二烯负离子聚合体系的研究 |
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| 引用本文： | 韩丙勇,张兴英,金关泰. 异丙醇氧锂-正丁基锂-丁二烯负离子聚合体系的研究[J]. 石油化工, 2003, 32(7): 579-581 |
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| 作者姓名： | 韩丙勇 张兴英 金关泰 |
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| 作者单位： | 北京化工大学,可控化学反应科学与技术基础教育部重点实验室,北京,100029 |
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| 摘 要： | 采用异丙醇和正丁基锂反应制备了异丙醇氧锂,并作为添加剂在环己烷中进行了丁二烯的负离子聚合。随着异丙醇氧锂加入量的增加,聚丁二烯基锂环己烷溶液的粘度下降,活性种的活性也降低;但对聚丁二烯的微观结构影响很小。异丙醇氧锂与丁二烯基锂活性种形成交叉缔合,宏观上表现为聚丁二烯基锂的缔合度降低,活性聚合物溶液粘度下降。
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| 关 键 词： | 异丙醇氧锂 负离子活性聚合 缔合 丁二烯 异丙醇 正丁基锂 |
| 文章编号： | 1000-8144(2003)07-0579-03 |
| 修稿时间： | 2003-01-04 |
Study on Anionic Polymerization of Butadiene Initiated by n-BuLi in the Presence of Lithium sec-Propoxide |
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| Abstract: | Lithium sec-propoxide was prepared by reaction of 2-propanol and n-BuLi or lithium,and was used as additive in anionic polymerization of butadiene(PB) in cyclohexane.With increasing amount of lithium sec-propoxide,the solution viscosity of polybutadienyllithium decreased gradually and it's activity became low.However,lithium propoxide had little effect on microstructure of PB.Lithium sec-propoxide and polybuta dienyllithium formed cross association,leading to dissociation of polybutadienyllithium. |
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| Keywords: | lithium sec-propoxide anionic polymerization association butadiene 2-propanol n-BuLi |
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