Journal of Thermal Analysis and Calorimetry

, Volume 112, Issue 2, pp 567–571 | Cite as

Mechanism studies of thermolysis process in copolyamide 66 containing triaryl phosphine oxide

  • Xiao Feng Yang
  • Qiao Ling Li
  • Zhi Ping Chen
  • Lei Zhang
  • You Zhou


Thermolysis behavior of flame-retardant copolyamide 66 (FR-PA66) in the presence of triaryl phosphine oxide (TPO) has been studied using different techniques such as differential scanning calorimetry, thermal gravimetric analysis, Fourier transform-infrared spectroscopy, and gas chromatography–mass spectrometry. The results indicate that TPO extends the thermolysis time of FR-PA66, and improves the thermolysis temperature. A three-stage mechanism for the decomposition of FR-PA66 has been proposed in this article. In the first stage, cleavage of P–C bond takes place in FR-PA66, while in the second stage, cleavage of polyamide chain occurs mainly. In the third stage, formation of cyclic compounds proceeds along with the formation of carbonized protective layer on the degraded polymer.


Thermolysis Mechanism Co-polyamide 66 Triaryl phosphine oxide 



The study has been supported by the Natural Science Foundation of Shanxi (Grant No. 2010021022-3), and the Scientific Research Foundation of the Higher Education Institutions of Shanxi Province, China (Grant No. 2010115).


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2012

Authors and Affiliations

  • Xiao Feng Yang
    • 1
  • Qiao Ling Li
    • 1
  • Zhi Ping Chen
    • 1
  • Lei Zhang
    • 1
  • You Zhou
    • 1
  1. 1.Departments of Chemistry, School of ScienceNorth University of ChinaTaiyuanChina

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