物理化学学报 >> 1988, Vol. 4 >> Issue (06): 606-610.doi: 10.3866/PKU.WHXB19880608

研究论文 上一篇    下一篇

聚甲基丙烯酸正烃酯的微观立构规整性

李卓美; 冯克; 张维邦   

  1. 中山大学高分子研究所
  • 收稿日期:1987-05-20 修回日期:1987-11-23 发布日期:1988-12-15
  • 通讯作者: 李卓美

THE MICROTACTICITY OF POLY (n-ALKYL METHACRYLATES)

Li Zhuomei; Feng Ke; Zhang Weibang   

  1. Institute of Polymer Science; Zhongshan University
  • Received:1987-05-20 Revised:1987-11-23 Published:1988-12-15
  • Contact: Li Zhuomei

摘要: 用碳13核磁共振谱(~(13)C NMR)测定了游离基聚合的聚甲基丙烯酸正烷基酯(PMA-1,-6,-7,-8,-10,-12,-14)的微观立构规整性。发现酯基的长短对规整性影响甚小, 聚合物以间规占多数。认为此现象与游离基聚合反应中链增长过程末端游离基的结构有关, 本文给予初步的解释.

Abstract: The microtacticity of seven poly (n-alkyl methacrylates)prepared from radical polymerization has been determined by ~(13)C NMR. High syndiotactic stereoregularity was observed and the ester size showed little influence on the microtacticity of the chains. This phenomenon may be related to the structure of the terminal radical formed in the propagation reaction in free-radical polymerization. A preliminary explanation has been given.