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

页码：683 / 695

页数：13

共 38 条

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REIMER, D
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KOCOT, A
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ZENTEL, R
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