高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (4): 650.

• 研究快报 • 上一篇    下一篇

新型引发体系引发MMA“活性”自由基聚合

秦东奇, 钦曙辉, 丘坤元   

  1. 北京大学化学与分子工程学院高分子科学与工程系, 北京 100871
  • 收稿日期:1999-09-01 出版日期:2000-04-24 发布日期:2000-04-24
  • 通讯作者: 丘坤元(1932出生),男,教授,博士生导师,主要从事高分子合成及自由基聚合等研究.

Living" Radical Polymerization of Methyl Methacrylate with a New Initiating System

QIN Dong-Qi, QIN Shu-Hui, QIU Kun-Yuan   

  1. Department of Polymer Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
  • Received:1999-09-01 Online:2000-04-24 Published:2000-04-24

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关键词: 反向原子转移自由基聚合, &ldquo, 活性&rdquo, 自由基聚合, 2, 3-二氰基-2, 3-二苯基丁二酸二乙酯, 甲基丙烯酸甲酯

Abstract: Living" radical polymerization of methyl methacrylate was investigated using a new initiating system, i.e. DCDPS/FeCl3/PPh3, in which diethyl 2,3-dicyano-2,3-diphenyl succinate(DCDPS) is a hexa substituted ethane thermal iniferter. The polymerization mechanism belongs to a reverse ATRPprocess. The polymerization was closely controlled in bulk at 75 ℃, polymethyl methacrylate(PMMA) with a high molecular weight and quite narrow polydispersity ( Mw/ Mn=120—129) was obtained. End group analysis by 1H NMR spectroscopy shows that the resulting PMMA is ω-functionalized by a chlorine atom, which is also confirmed by the chain-extension reaction in the presence of CuCl/bipy catalyst via a conventional ATRP process.

Key words: Reverse atom transfer radical polymerization, "Living", radical polymerization, Diethyl 2,3-dicyano-2,3-diphenylsuccinate(DCDPS), Methyl methacrylate (MMA)

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