| Ring-opening Polymerization of e-Caprolactone Using Lanthanide Tris(4-tert-butylphenolate)s as a Single-component Initiator |
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| 作者姓名： | Cui Ping YU Li Fang ZHANG Zhi Quan SHEN Institute of Polymer Science Zhejiang University Hangzhou |
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| 作者单位： | Cui Ping YU，Li Fang ZHANG，Zhi Quan SHEN Institute of Polymer Science，Zhejiang University，Hangzhou 310027 |
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| 摘 要： | The ring-opening polymerization of e-caprolactone (CL) initiated by novel single lanthanide tris(4-tert-butylphenolate)s Ln(OTBP)3] is reported. Single-component La(OTBP)3 can effectively prepare polycaprolactone (PCL) with over 90% yield and viscosity average molecular weight about 60 x 10 under quite mild conditions: molar ratio of CL to initiator is 1000, 60 C, 2 h in toluene. Mechanism study indicates that the monomer inserts into the growing chain via the break of acyl-oxygen bond of CL.
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Ring-opening Polymerization of e-Caprolactone Using Lanthanide Tris(4-tert-butylphenolate)s as a Single-component Initiator |
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| Cui Ping YU,Li Fang ZHANG,Zhi Quan SHEN Institute of Polymer Science,Zhejiang University,Hangzhou .Ring-opening Polymerization of e-Caprolactone Using Lanthanide Tris(4-tert-butylphenolate)s as a Single-component Initiator[J].Chinese Chemical Letters,2003(10). |
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| Authors: | Cui Ping YU Li Fang ZHANG Zhi Quan SHEN Institute of Polymer Science Zhejiang University Hangzhou |
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| Institution: | Cui Ping YU,Li Fang ZHANG,Zhi Quan SHEN Institute of Polymer Science,Zhejiang University,Hangzhou 310027 |
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| Abstract: | The ring-opening polymerization of e-caprolactone (CL) initiated by novel single lanthanide tris(4-tert-butylphenolate)s Ln(OTBP)3] is reported. Single-component La(OTBP)3 can effectively prepare polycaprolactone (PCL) with over 90% yield and viscosity average molecular weight about 60 x 10 under quite mild conditions: molar ratio of CL to initiator is 1000, 60 C, 2 h in toluene. Mechanism study indicates that the monomer inserts into the growing chain via the break of acyl-oxygen bond of CL. |
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| Keywords: | Lanthanide tris(4-tert-butylphenolate)s e-caprolactone ring-opening polymerization |
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