高等学校化学学报 ›› 1988, Vol. 9 ›› Issue (4): 389.

• 论文 • 上一篇    下一篇

用动力学方法研究8,9-苯并-2-亚甲基-1,4,6-三氧螺[4,4]壬烷的聚合反应机理

潘才元, 吕绍祥   

  1. 中国科学技术大学应用化学系
  • 收稿日期:1986-11-14 出版日期:1988-04-24 发布日期:1988-04-24
  • 通讯作者: 潘才元
  • 基金资助:

    中国科学院科学基金

The Propagation Mechanism of 8,9-Benzo-2-Methyl-ene-1,4,6-Trioxaspiro[4,4] Nonane

Pan Caiyuan, Lü Shaoxiang   

  1. Department of Applied Chemistry, University of Science and Technology ofChina, Hefei
  • Received:1986-11-14 Online:1988-04-24 Published:1988-04-24

摘要: 根据在自由基引发剂存在下,8,9-苯并-2-亚甲基-1,4,6-三氧螺[4,4]壬烷(Ⅰ)可能存在的竞争反应,推导了动力学方程式。用红外光谱法测定了单体的消失速率和苯酞的生成速率。实验结果与推导动力学方程式相符。进一步证明了单体(Ⅰ)的增长反应由加成聚合和开环—异构化—加成这两个反应组成。这两个反应对总速率的相对贡献与单体浓度有关。得到了共聚物的结构。

关键词: 8, 9-苯并-2-亚甲基-1, 4, 6-三氧螺[4, 4]壬烷, 红外光谱法, 动力学方法, 聚合反应机理

Abstract: Based on the possible propagation reaction of 8,9-benzo-2-methylene-1, 4,6-trioxaspiro [4,4] nonane (Ⅰ), initiated by free radical initiators, a kinetic equation has been deduced. The rates of monomer(Ⅰ) Consumption and phthalide formation during the polymerization were measured by IRand the experimental results confirmed the kinetic equation. This demonstrates that the propagation reactions of monomer (Ⅰ) include two reactions addition polymerization and ring-opening -isomerization-addition polymerization. The relative contribution of these two reactions to the total polymerization rate depends on the monomer concentrations. The structure of polymer is measured.

Key words: 8,9-Benzo-2-methylene-1,4,6-trioxaspiro[4,4]nonane, IR spec-trometry, Kinetic method, Propagation mechanism

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