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Citation: Yao Yingming, Shen Qi, Hu Jingyu. Ring-Opening Polymerization of Lactide by (ArO)₂Sm(THF)₄(ArO=2,6-ditertbutyl-4-methylphenoxo-)[J]. Chinese Journal of Applied Chemistry, ;1998, 15(1): 62-64. shu

Ring-Opening Polymerization of Lactide by (ArO)₂Sm(THF)₄(ArO=2,6-ditertbutyl-4-methylphenoxo-)

1.
School of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006;
2.
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun

Received Date: 4 March 1997
Revised Date: 4 September 1997

Ring-opening polymerization of D,L-lactide has been successfully carried out by (ArO)₂Sm(THF)₄ (ArO=2, 6-ditertbutyl(4-methylphenoxo-) as catalyst for the first time. The catalyst contentration, monomer concentration and solvent showed a marked effect on the polymerization. The polymerization rate decrease with increase of monomer concentra-tion and decrease of catalyst concentration. The initiation mechanism has been discussed ac-cording to the results of end-group analysis of oligomer by IR. The active species are sup-posed to be a samarium enolate formed from the reaction of (ArO)₂Sm(THF)₄ with lactide.
- lactide,
- ring-opening polymerization,
- divalent lanthanide complex
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Ring-Opening Polymerization of Lactide by (ArO)2Sm(THF)4(ArO=2,6-ditertbutyl-4-methylphenoxo-)

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通讯作者: 陈斌, bchen63@163.com

Ring-Opening Polymerization of Lactide by (ArO)₂Sm(THF)₄(ArO=2,6-ditertbutyl-4-methylphenoxo-)