| ε-己内酯负离子聚合过程烷氧基锂活性种的缔合 |
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| 引用本文： | 鲁东亮,吴美琰.ε-己内酯负离子聚合过程烷氧基锂活性种的缔合[J].高分子学报,1990,0(5):538-542. |
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| 作者姓名： | 鲁东亮 吴美琰 |
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| 作者单位： | 北京市化工研究院 |
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| 摘 要： | 本文以粘度法研究在苯溶剂中,ε-己内酯负离子开环聚合过程,增长链活性种烷氧基锂(—O~-Li~+)的缔合,发现己内酯活性种的缔合和一般非极性单体不同,前者在聚合过程中(单体消耗完以前)并不发生缔合。在单体消耗完以后,聚己内酯活性种才确实以缔合体的形式存在。这是由于内酯本身贡献了强的溶剂化作用。
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| 关 键 词： | 负离子聚合 活性种的缔合 ε-己内酯 烷氧基锂引发剂 开环聚合 |
| 收稿时间： | 1989-01-25 |
ASSOCIATION OF ALKOXYL-LITHIUM LIVING SPECIES IN ANIONIC POLYMERIZATION OF 6-CAPROLACTONE |
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| LU Dong-liang,WU Mei-yan.ASSOCIATION OF ALKOXYL-LITHIUM LIVING SPECIES IN ANIONIC POLYMERIZATION OF 6-CAPROLACTONE[J].Acta Polymerica Sinica,1990,0(5):538-542. |
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| Authors: | LU Dong-liang WU Mei-yan |
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| Institution: | Institute of Chemistry; Academia Sinica; Beijing 100080 |
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| Abstract: | The association of living species in the anionic polymerization of e-caprolatone initiated by t-BuOLi in benzene solvent was studied by viscometry. It has been found that after complete conversion of e-caprolatone monomer, association of alkoxyl-lithium is indeed present and the association tendency increases with increasing initiator concentration. However, before monomer was consumed (i.e. during the course of propagation), no intermolecular association between growing species was observed. The result is in good agreement with our kinetic study showing that the monomer lactone itself acts as a strong solvation agent. |
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| Keywords: | Anionic polymerization Association of living species e-caprolatone Al-koxyl-Lithium initiator Ring-Opening polymerization |
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