| 三(2,4,6-三甲基苯氧基)稀土配合物引发DL-丙交酯开环聚合特征与机理的研究 |
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| 引用本文： | 樊玲,熊玉兵,涂克华,沈之茎.三(2,4,6-三甲基苯氧基)稀土配合物引发DL-丙交酯开环聚合特征与机理的研究[J].中国化学,2005,23(5):613-616. |
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| 作者姓名： | 樊玲 熊玉兵 涂克华 沈之茎 |
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| 作者单位： | InstituteofPolymerScience,ZhejiangUniversity,Hangzhou,Zhejiang310027,China |
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| 摘 要： | Tris(2,4,6-trimethylphenolate) lanthartide Ln(OTMP)3] has been prepared and employed for ring-opening polymerization of D,L-lactide (LA) as single-component catalysts. The characteristics, kinetics and mechanism were examined. The polymerization is first-order with respect to monomer and initiator concentration, and the overall activation energy amounts to 62.9 kJ/mol. DSC curve disclosed the random structure of PLA. ^1H NMR spectrum analysis demonstrates that the polymerization of LA proceeded through acyl-oxygen bond cleavage.
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| 关 键 词： | 开环聚合反应 D L-丙交酯 稀土元素 三（2 4 6-三甲基色氨酸酚盐） 动力学分析 化学特征 |
| 收稿时间： | 2004-8-5 |
| 修稿时间： | 2005-1-19 |
Ring‐opening Polymerization of D,L‐Lactide by Lanthanide Tris(2,4,6‐trimethylphenolate): Characteristics and Kinetics |
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| Fan Ling,Xiong Yu‐Bing,Tu Ke‐Hua,Shen Zhi‐Quan.Ring‐opening Polymerization of D,L‐Lactide by Lanthanide Tris(2,4,6‐trimethylphenolate): Characteristics and Kinetics[J].Chinese Journal of Chemistry,2005,23(5):613-616. |
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| Authors: | Fan Ling Xiong Yu‐Bing Tu Ke‐Hua Shen Zhi‐Quan |
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| Abstract: | Tris(2,4,6‐trimethylphenolate) lanthanide Ln(OTMP)3] has been prepared and employed for ring‐opening polymerization of D,L‐lactide (LA) as single‐component catalysts. The characteristics, kinetics and mechanism were examined. The polymerization is first‐order with respect to monomer and initiator concentration, and the overall activation energy amounts to 62.9 kJ/mol. DSC curve disclosed the random structure of PLA. 1H NMR spectrum analysis demonstrates that the polymerization of LA proceeded through acyl‐oxygen bond cleavage. |
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| Keywords: | lanthanide tris(2 4 6‐trimethylphenolate) ring‐opening polymerization D L‐lactide |
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