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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。
In this paper, the cleavage process and chain structure of polyaniline (PAn) and poly (o-methylanilide) (POT) with different oxidation degrees were studied by direct pyrolysis mass spectrometry and pyrolysis chromatography / mass spectrometry. Collision induced dissociation (CID) E) and other techniques to explore the chain fracture mechanism. The results showed that when the polyaniline and its derivatives were cleaved at 650 ℃, five units of linear oligomers were produced. The phenylenediamine and quinone imine groups coexisted in PAn and POT. The pyrolysis mechanism of free radical transition state between PAn and POT was proposed.