Acta Chimica Sinica ›› 2005, Vol. 63 ›› Issue (20): 1861-1865. Previous Articles     Next Articles

Original Articles

通过自缩合乙烯基氧阴离子聚合制备超支化聚甲基丙烯酸羟丙酯

贾志峰,陈皞,颜德岳*   

  1. (上海交通大学化学化工学院 上海 200240)
  • 投稿日期:2005-03-15 修回日期:2005-06-24 发布日期:2010-12-10
  • 通讯作者: 颜德岳

Synthesis of Hyperbranched Poly(2-hydroxypropyl methacrylate) by Self-condensing Vinyl Oxyanionic Polymerization

JIA Zhi-Feng, CHEN Hao, YAN De-Yue*   

  1. (School of Chemistry and Chemical Technology, Shanghai Jiaotong University, Shanghai 200240)
  • Received:2005-03-15 Revised:2005-06-24 Published:2010-12-10
  • Contact: YAN De-Yue

Hyperbranched polymethacrylates with hydroxyl end groups were prepared by means of self-condensing vinyl oxyanionic polymerization of commercially available monomer 2-hydroxypropyl methacrylate. The hyperbranched polymers with high molecular weight were obtained with the complex of potassium hydride and 18-crown-6 as the initiator. The molecular structure of the hyperbranched polymers was confirmed with 1H and 13C NMR spectra. The amount of initiator used in the polymerization could affect the structure of polymer based on a proton-transfer process. The glass transition temperature of the prepared polymers ranged from 58.1 to 81.4 ℃, and decreased with decreasing the initiator to monomer ratio. When the ratio of initiator to monomer equaled 1, the degree of branching of the resulting polymer was calculated to be 0.49.

Key words: hyperbranched polymer, self-condensing vinyl polymerization, 2-hydroxypropyl methacrylate, oxyanionic polymerization