摘要
本文用直接裂解质谱和裂解色谱/质谱研究了不同氧化程度聚苯胺(PAn)和聚邻甲基苯胺(POT)的裂解过程及链结构,并用碰撞诱导解离(CID)和联合扫描(B/E)等技术探讨了链的断裂机理。结果表明,聚苯胺及其衍生物在650℃下裂解时产生5个单元的线状齐聚物,PAn及POT中苯二胺和醌亚胺两种结构单元共存。并提出了PAn和POT的自由基过渡态热解机理。
The thermal decomposition of a series of polyanilines with different oxidation degrees and poly-o-toluidine was studied by Direct Pyrolysis Mass Spectrometry (DPMS) and Pyrolysis Gas Chromatograph/Mass Spectrometry(PGC/MS). The techniques of Collision Induced Decomposition (CID) and Tandem Mass Spectrometry have been used to investigate the mechanism of the chain cleavage.The results showed that the series of ions containing several units of polyaniline can be divided into two sources: benzene-diamine and guinone-deirnine units in polyaniline and its derivatines. The ratios of relative abandances of above ions were strongly influenced by the oxidation degrees. The mechanism of thermal decomposition of polyanilines and their derivatives was discussed.
出处
《应用化学》
CAS
CSCD
北大核心
1993年第4期47-50,共4页
Chinese Journal of Applied Chemistry
基金
中国科学院高分子物理联合开放研究实验室资助项目
关键词
直接裂解质谱
聚苯胺
裂解
direct pyrolysis mass spectrometry, polyaniline, oxidation degrees, thermal decomposition
