应用化学 ›› 1987, Vol. 0 ›› Issue (6): 48-53.

• 研究论文 • 上一篇    下一篇

聚乙炔热氧化过程的研究

景遐斌, 王英, 綦玉臣, 赵晓江, 王佛松   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1986-09-01 修回日期:1986-12-17 出版日期:1987-12-10 发布日期:1987-12-10
  • 基金资助:
    中国科学院科学基金

THE THERMAL OXIDATION OF POLYACETYLENE

Jing Xiabin, Wang Ying, Qi Yucheng, Zhao Xiaojiang, Wang Fosong   

  1. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1986-09-01 Revised:1986-12-17 Published:1987-12-10 Online:1987-12-10

摘要: 本文测定了聚乙炔在氮气、空气和氧气中的等速升温热重曲线,测定了不同聚乙炔样品热氧化的恒温热重曲线,比较了聚合体系和顺反结构等对热氧化行为的影响。观察到钕催化聚乙炔的热氧化诱导现象。动力学分析表明,氧化反应对聚乙炔和氧气浓度都接近表观一级反应,顺式聚乙炔的表观活化能为42±6ki/mol,反式聚乙炔为51±6kJ/mol。用红外光谱跟踪氧化过程,表明含氧基团可分两类,分属于中间和最终产物,由此推断了可能的氧化反应。

Abstract: The thermal oxidation of polyacetylene (PA) was studied by thermogravity(TG) and infrared spectroscopy. Effects of polymerization catalysts and cis-trans configurations of PA and atmosphere were examined. Obvious induction effect was observed for the PA prepared with Nd-catalyst. Kinetic analysis of the TG data showed that the thermal oxidation was approximately of first order for both PA and O2 concentrations and the apparent activation energy was 42?6kJ/mol for cis-PA and 51?6kJ/mol for trans-PA. Based on the variation of the IR bands with oxidation time, possible oxidation reactions were deduced.