Thermal degradation of poly[(R)-3-hydroxybutyrate], poly[ε-caprolactone], and poly[(S)-lactide]

被引：397

作者：

Aoyagi, Y

Yamashita, K

Doi, Y

机构：

[1] Riken Inst Phys & Chem Res, Polymer Chem Lab, Wako, Saitama 3510198, Japan

[2] Akebono Brake R&D Ctr Ltd, Hanyu, Saitama 3488501, Japan

[3] Tokyo Inst Technol, Dept Innovat & Engn Mat, Midori Ku, Yokohama, Kanagawa 2268502, Japan

来源：

POLYMER DEGRADATION AND STABILITY | 2002年 / 76卷 / 01期

关键词：

thermal degradation; thermoanalysis; pyrolysis; poly(3-hydroxybutyrate); poly(epsilon-caprolactone); poly(lactide); biodegradable polymer;

D O I：

10.1016/S0141-3910(01)00265-8

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理]; 080501 [材料物理与化学]; 081704 [应用化学];

摘要：

Thermal degradations of poly[(R)-3-hydroxybutyrate] (PHB), poly[epsilon-caprolactone] (PCL), and poly[(S)-lactide] (PLA) were investigated under both isothermal and non-isothermal conditions. In isothermal degradation experiments, the three polyesters showed quite different time-dependent profiles of weight loss and the number-average degree of polymerization, reflecting their different degradation mechanisms. Thermogravimetric analysis and pyrolysis coupled with GC/MS suggest that PHB is degraded by a random chain scission (cis-elimination), while PCL is degraded by an unzipping depolymerization from the hydroxyl end of the polymer chains. In contrast, the thermal degradation behavior of PLA was very complex because various reactions occurred concurrently. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：53 / 59

页数：7

共 35 条

[1]

Babanalbandi A, 1999, POLYM INT, V48, P980, DOI 10.1002/(SICI)1097-0126(199910)48:10<980::AID-PI257>3.0.CO

[2]

2-B

[3]

Influence of residual monomers and metals on poly (L-lactide) thermal stability [J].