Citation: Wen Lin, Wei Lin Sun, Zhi Quan Shen. Lanthanum heterocyclic Schiff-base complex initiated ring-opening polymerization of ε-caprolactone[J]. Chinese Chemical Letters, ;2007, 18(9): 1133-1136. doi: 10.1016/j.cclet.2007.06.021 shu

Lanthanum heterocyclic Schiff-base complex initiated ring-opening polymerization of ε-caprolactone

Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China

Received Date: 10 April 2007

Fund Project: The authors are indebted to the financial support of the National Natural Science Foundation of China (No.20434020),and the special Funds for Major State Basic Research Projects (No.2005 CB 623802).

Lanthanum complex supported by the heterocyclic Schiff-base ligand of N-(2-pyridyl)-3, 5-di-tert-butyl-salicylaldimine was prepared and employed for the ring-opening polymerization (ROP) of ε-caprolactone (ε-CL). The polymers obtained with this initiator showed a unimodal molecular weight distribution implied that only one active species was present. Mechanism study revealed that the polymerization proceeds via acyl-oxygen bond cleavage.
- Heterocyclic Schiff-base,
- Rare earth complex,
- ε-Caprolactone,
- Ring-opening polymerization
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