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化学学报
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化学学报 ›› 2008, Vol. 66 ›› Issue (20): 2263-2270. 上一篇    下一篇

研究论文

近红外原位研究杂多酸引发的环氧-四氢呋喃阳离子聚合

励 亮 吴起立 余英丰* 唐晓林* 李善君 武培怡

  

  1. (复旦大学高分子科学系 聚合物分子工程实验室(教育部) 上海 200433)

  • 投稿日期:2008-03-04 修回日期:2008-04-15 发布日期:2008-10-28
  • 通讯作者: 余英丰

Near-IR Investigation on the Cationic Polymerization of Epoxy and Tetrahydrofuran Initiated by Heteropoly Acid

LI, Liang WU, Qi-Li YU, Ying-Feng* TANG, Xiao-Lin*
LI, Shan-Jun WU, Pei-Yi
  

  1. (Key Laboratory of Polymer Engineering Science, Department of Macromolecular Science,
    Fudan University, Shanghai 200433)
  • Received:2008-03-04 Revised:2008-04-15 Published:2008-10-28
  • Contact: YU, Ying-Feng

PDF

1220

被引次数

4

用近红外光谱原位跟踪的方法, 研究了杂多酸催化的环氧树脂和四氢呋喃的阳离子聚合过程. 发现在低环氧树脂含量下, 环氧消耗速率在整个聚合过程中维持不变; 而在高环氧树脂含量下, 环氧消耗速率则随时间有所下降. 通过红外光谱在碳氢区域的分峰分析, 证明环氧树脂与四氢呋喃发生了共聚反应, 二维红外光谱的结果也确证了这一结果. 此外, 还探讨了环氧转化速率与环氧含量间的关系.

关键词: 杂多酸, 阳离子聚合, 环氧

The cationic copolymerization of diglycidyl ether of bisphenol-A with tetrahydrofuran initiated by phosphotungstic acid was in-situ investigated by Fourier transform near-infrared spectroscopy. It was found that the consumption rate of epoxy groups did not change with reaction time at low epoxy concen-
trations, while it decreased with the reaction time at a high epoxy concentration. In addition, the peak splitting pattern of the overlapping C—H vibration region was developed. The peak splitting analysis of the spectra showed that the copolymerization did occur, which was further proved by the results of generalized two-dimensional correlation analysis. Furthermore, the relationship between the consumption rate and the concentration of the epoxy groups was discussed.

Key words: polyoxometalate, cationic polymerization, epoxy