Controlled Ring-opening Polymerization of ε-Caprolactone Initiated by in situ Formed Yttrium Tribenzyloxide Complex

被引：0

作者：

Liang Zhen-Hua ^{[1
]}

Ni Xu-Feng ^{[1
]}

Shen Zhi-Quan ^{[1
]}

机构：

[1] Zhejiang Univ, Key Lab Macromol Synth & Functionalizat, Minist Educ, Dept Polymer Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China

来源：

CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE | 2011年 / 32卷 / 08期

关键词：

Ring-opening polymerization; epsilon-Caprolactone; Yttrium complex; TRIS(2,6-DI-TERT-BUTYL-4-METHYLPHENOLATE); COPOLYMERIZATION; MECHANISM; LACTONES; CHLORIDE;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Yttrium tribenzyloxide complex in situ formed by the reaction of yittrium trialkyl complex [ Y ( CH(2)SiMe(3) ) (3) ( THF ) (2) ] with 3 mol benzyl alcohol were used as initiator for the controlled ring-opening polymerization( ROP ) of epsilon-caprolactone( CL ). (1)H NMR studies indicated that the PCLs obtained were caped by a benzyloxyl group at one end and an alcohol at the other. The number average molecular weight measured by (1)H NMR and GPC both increase linearly with the monomer/yttrium molar ratio with narrow molecular weight distribution( MWD ). Moreover, the M(n) measured by (1)H NMR agrees with the value of the calculated M(n), suggesting that the ROP of CL undergo a living manner.

引用

页码：1881 / 1883

页数：3

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