Bulk polymerization of lactides initiated by aluminium isopropoxide .3. Thermal stability and viscoelastic properties

被引：43

作者：

Degee, P ^{[1
]}

Dubois, P ^{[1
]}

Jerome, R ^{[1
]}

机构：

[1] UNIV LIEGE,CTR EDUC & RES MACROMOL,B-4000 LIEGE,BELGIUM

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 1997年 / 198卷 / 06期

关键词：

D O I：

10.1002/macp.1997.021980624

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 thermal stability of poly(L-lactide) and L/D-lactide stereocopolymers polymerized in bulk with aluminium isopropoxide as initiator was investigated by thermogravimetric analysis, and time and temperature dependence of molecular weight and polydispersity. Compared to poly(L-lactide) prepared with stannous octoate as catalyst, the thermal stability of polylactides is remarkably enhanced when the ring-opening polymerization is initiated by aluminium alkoxide. Ultimate mechanical properties and viscoelasticity of these melt-stable thermoplastics have also been studied in relation to the polyester enantiomeric composition.

引用

页码：1985 / 1995

页数：11