高等学校化学学报

高等学校化学学报 ›› 1989, Vol. 10 ›› Issue (5): 506.

• 研究论文 • 上一篇    下一篇

过氧化二碳酸酯和N N-二羟烷基对甲苯胺体系引发甲基丙烯酸甲酯聚合

丘坤元, 傅杰   

  1. 北京大学化学系
  • 收稿日期:1987-09-12 出版日期:1989-05-24 发布日期:1989-05-24
  • 通讯作者: 丘坤元

Polymerization of Methyl Methacrylate Initiated by Peroxydicarbonate and N,N-dihydroxyalkyl -p-toluidine Systems

Qiu Kunyuan, Fu Jie   

  1. Department of Chemistry, Peking University, Beijing
  • Received:1987-09-12 Online:1989-05-24 Published:1989-05-24

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摘要： 本文以过氧化二碳酸酯BPPD和芳叔胺DHET、DHPT、DMT、DMA组成的引发体系进行MMA聚合的研究。测定了聚合速率Rp,发现添加DHET、DHPT能促进MMA的聚合,缩短诱导期,提高Rp,其效果要比DMT、DMA为好。测定了E3和聚合速率方程。由ESR谱和端基分析证实DHET、DHPT芳胺组分产生的自由基能引发单体聚合。

关键词: 过氧化二碳酸二(2-苯氧乙基)酯, N, N-二羟烷基对甲苯胺, 氧化还原引发体系MMA聚合

Abstract: The polymerization of methyl methacrylatc (MMA) initiated by bis-2-phenoxyethyl peroxydicarbonate (BPPD) and N, N-di-2-hydroxyethyl-p-toluidine (DHET), N, N-di-2-hydroxypropyl-p-toluidine(DHPT), N,N-dimethyl-p-toluidine(DMT), N,N-dimethyl aniline(DMA) binary systems has been studied. The polymerization rate RP and overall activation energy E3 of polymerization were determined respectively. It was found that the order of RP for initiation systems was BPPD-DHET≈BPPD-DHPT>BPPD-DMT, while the order of Eg was reversed. The rate equations for MMApolymerization in toluene solution were also determined. An initiation mechanism was proposed based on the results of ESRstudies and end group analysis.

Key words: Bis-2-phenoxyethyl peroxydicarbonate, N, N-di-2-hydroxyalkyl-_p-to- luiciine, Redox initiation system, MMA polymerization

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