Living ring-opening polymerization of cyclic esters with epoxide-derived titanium alkoxides

被引：43
|
作者：
Asandei, AD
Saha, G
机构：
[1] Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA
[2] Univ Connecticut, Dept Chem, Storrs, CT 06269 USA
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2005年 / 26卷 / 08期
关键词：
epoxy; living polymerization; poly(epsilon-caprolactone); ring-opening polymerization; titanium;
D O I：
10.1002/marc.200400644
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The (TiCp2Cl)-Cp-III-catalyzed radical ring opening of epoxides produces Ti alkoxides which initiate the ring-opening polymerization of epsilon-caprolactone. A linear dependence of (M) over bar on conversion, linear kinetics, low (M) over bar (w)(M) over bar (n) values, and the synthesis of block copolymers demonstrate a living process, while NMR spectroscopy confirms the presence of the initiator chain end. Epoxides are thus introduced as a new class of initiators for the Ti-catalyzed living ring-opening polymerization of cyclic esters.
引用
收藏
页码：626 / 631
页数：6
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