Thermal stability and degradation mechanism for two main-chain liquid crystal polyesters - A TG-MS study

被引：7
|
作者：
Ellis, G [1 ]
Marco, C [1 ]
del Pino, J [1 ]
Gomez, MA [1 ]
机构：
[1] CSIC, Inst Ciencia & Tecnol Polimeros, Dept Fis & Ingn Polimeros, E-28006 Madrid, Spain
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 1998年 / 52卷 / 03期
关键词：
degradation mechanism; FTIR; liquid crystal polyesters; mass spectroscopy; TG-MS; thermal stability;
D O I：
10.1023/A:1010185817984
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The thermal stabilities of two thermotropic liquid crystal polyesters were analysed by means of thermogravimetric analysis (TG), as a function, of the chemical structure of the aliphatic spacer between the aromatic-triad mesogenic units. TG was combined with mass spectrometry to confirm that the degradation mechanism previously observed in a Fourier transform infrared study of the degrading polymers follows a beta-cis-elimination process.
引用
收藏
页码：683 / 695
页数：13
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