化工进展

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热重质谱法研究聚苯乙烯热降解机理

张敏华,李春华,姜浩锡   

  1. 天津大学石油化工技术开发中心,绿色合成与转化教育部重点实验室;
    天津市环境保护科学研究院
  • 出版日期:2008-04-05 发布日期:2008-04-05

Thermal degradation mechanism of polystyrene by TG-MS

ZHANG Minhua,LI Chunhua,JIANG Haoxi   

  1. Key Laboratory for Green Chemical Technology,Ministry of Education,Research and Development Center for Petrochemical Technology,Tianjin University;Tianjin Academy of Environmental Science
  • Online:2008-04-05 Published:2008-04-05

摘要: 采用热重质谱法研究了聚苯乙烯的热降解过程。研究发现降解产物中苯乙烯的选择性远高于其它产物,推测聚苯乙烯热降解主要为链端断裂引发;苯乙烯二聚体在聚苯乙烯降解基本完全时出现,可能是降解结束阶段的剩余物。

Abstract: Thermal degradation of polystyrene was investigated with thermogravimetry-mass spectrum analysis (TG-MS). The selectivity of styrene was much higher than other degradation products,suggesting initiation of thermal degradation from chain end scission. Styrene dimer appeared at the last stage of polystyrene degradation,indicating that styrene dimer was possibly the residue of polystyrene degradation

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