Coordination polymerization of lactides .5. Influence of lactide structure on the transesterification processes in the copolymerization with epsilon-caprolactone

被引：65

作者：

Bero, M

Kasperczyk, J

机构：

[1] Institute of Polymer Chemistry, Polish Academy of Sciences

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 1996年 / 197卷 / 10期

关键词：

D O I：

10.1002/macp.1996.021971015

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 influence of lactide configuration on the chain microstructure of lactide/epsilon-caprolactone copolymer was investigated. The copolymerization was carried out in the pre presence of Al(acac)(3), AlEt(3) and ZnEt(2) as initiators. The chain microstructure analysis of the copolymers was performed by means of C-13 NMR spectroscopy. The effect of lactide configuration on the transesterification and randomization of the copolymer chain was determined. The contribution of transesterification processes in the case of D,L-lactide was found to be considerably higher than that observed when L,L-lactide was used.

引用

页码：3251 / 3258

页数：8

共 12 条

[1]

BERO M, 1990, MAKROMOL CHEM, V191, P2287

[2]

BERO M, 1993, MAKROMOL CHEM, V194, P907

[3]

CHANG RK, 1986, DRUG DEV IND PHARM, V12, P2335

[4] POLYMERIZATION TEMPERATURE EFFECTS ON THE PROPERTIES OF L-LACTIDE AND EPSILON-CAPROLACTONE COPOLYMERS [J].