Monitoring thermo-oxidative degradation of polypropylene by CRYSTAF and SEC-FTIR

被引：11
|
作者：
de Goede, S
Brüll, R
Pasch, H
Marshall, N
机构：
[1] SASOL Polymers, ZA-1645 Modderfontein, South Africa
[2] German Inst Polymers, D-64289 Darmstadt, Germany
[3] Schumann SASOL, ZA-1947 Sasolburg, South Africa
来源：
MACROMOLECULAR SYMPOSIA | 2003年 / 193卷
关键词：
D O I：
10.1002/masy.200390062
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Samples of a polypropylene homopolymer have been degraded and analysed with regard to chemical composition, molecular weight distribution and chemical composition distribution. FTIR shows the progress of degradation and a decrease in molecular weight can be observed from SEC. CRYSTAF shows that the chemical heterogeneity of the samples broadens with continuing degradation. SEC-FTIR reveals that the degraded species are mainly found in the low molecular end of the molecular weight distribution. The spatial heterogeneity of the degradation process has been proven by the analysis of abrased layers.
引用
收藏
页码：35 / 43
页数：9
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