Thermal degradation behaviour of isotactic polypropylene blended with lignin

被引：127

作者：

Canetti, M ^{[1
]}

Bertini, F ^{[1
]}

De Chirico, A ^{[1
]}

Audisio, G ^{[1
]}

机构：

[1] CNR, Ist Studio Macromol, I-20133 Milan, Italy

来源：

POLYMER DEGRADATION AND STABILITY | 2006年 / 91卷 / 03期

关键词：

degradation; lignin; polypropylene; thermogravimetric analysis (TGA);

D O I：

10.1016/j.polymdegradstab.2005.01.052

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 lignin on the thermal degradation of isotactic polypropylene, investigated by thermogravimetric analysis, is reported in this article. Polypropylene blends containing 5 and 15 wt% of lignin were prepared by mixing the components in a screw mixer. An increase in the thermal degradation temperature of the blends was observed as a function of lignin content, in both oxidative and non-oxidative conditions. The increase is noticeably marked for the experiments carried out in air atmosphere, where the interactions between the polypropylene and the lignin lead to the formation of a protective surface able to reduce the oxygen diffusion towards the polymer bulk. Morphological analyses were carried out with optical and electronic microscopy, to evaluate the degree of dispersion of the lignin in the polypropylene matrix. X-ray techniques were employed to study the influence of lignin on the structure of the blended polypropylene. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：494 / 498

页数：5

共 15 条

[1] Morphology, crystallization and melting properties of isotactic polypropylene blended with lignin [J].