Analysis of Pyrolysates for Polysulphoneamide Fiber by Py-GC/MS

作     者：钱和生 林丹丽 

作者机构：Research Center for Analysis and Measurement Donghua University 

出 版 物：《Journal of Donghua University(English Edition)》 (东华大学学报（英文版）)

年 卷 期：2006年第23卷第2期

页      面：63-67页

核心收录：

学科分类：07[理学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 070302[理学-分析化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0811[工学-控制科学与工程] 

主　　题：热解 气体色谱法 质量光谱学 分子链 

摘      要：Pyrolysis of polysulphoneamide fiber has been investigated using pyrolysis gas chromatography-mass spectroscopy at the different temperatures from 420℃ to 750℃. Its com-positions of pyrolysates have been analyzed. At 420 ℃, pyrolysis of molecular chain could not completely take place, 12 compounds of pyrolysis have only been identified. When the temperature increases, the compositions of pyrolysate increase sharply. Several compounds, especially sulfur dioxide, benzene, aniline, benzoic acid, 1,4-benzene dicaronitrile, N-phenyl-acetamide, diphenylamine, benzo[g] isoquinoline, N-phenyl-benzamide, N-(4-cyanophenyl) benzamide, could be formed.The degradation mechanisms which are determined by structure and amount of the thermal decomposition products are described. During pyrolysis, for polysulphoneamide, polymeric chain scissions take place as a successive removal of the monomer units from the polymeric chain. The chain scissions are followed by secondary reactions, which lead to a variety of compounds. Additional reactions can also take place during pyrolysis.