高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (8): 1151.

• 论文 • 上一篇    

二过碘酸合银(Ⅲ)络离子氧化还原引发丙烯酰胺聚合反应动力学的研究

刘盈海, 宋明芳, 侯日升   

  1. 河北大学化学系, 保定, 071002
  • 收稿日期:1991-08-09 出版日期:1992-08-24 发布日期:1992-08-24
  • 通讯作者: 刘盈海

Studies on the Kinetics of Acryl amide Polymerization Redox Initiated by Diperiodato-argentate(Ⅲ) Complex Ion

LIU Ying-Hai, SONG Ming-Fang, HOU Ri-Sheng   

  1. Department of Chemistry, Hebei University, Baoding, 071002
  • Received:1991-08-09 Online:1992-08-24 Published:1992-08-24

摘要: 二过碘酸合银[Ag(Ⅲ)]在氧化还原反应中为双电子转移反应,没有中间自由基产生,不能引发丙烯腈聚合[1,2].我们发现,Ag(Ⅲ)与不同还原剂组成氧化还原体系,在一定条件下,能引发烯类单体聚合.本文研究了Ag(Ⅲ)为氧化剂、丙烯酰胺(AM)为还原剂引发AM聚合反应的动力学,得到了聚合速率方程和表观活化能,测得了聚合物分子量M,探讨了引发机理.

关键词: 二过碘酸合银(Ⅲ), 丙烯酰胺, 氧化还原引发

Abstract: The kinetics of acrylamide polymerization initiated by diperiodato-argentate(Ⅲ)[Ag (Ⅲ) was studied in alkaline medium.The results indicate that the equation of the polymerization rate is as follows:Rp=k[AM]1.21[Ag(Ⅲ)]0.90 and the overall activation energies of AM polymerization are 48.5kJ/mol.The polymer molecular weight decreases with increasing Ag(Ⅲ).The effects of reaction conditions on the polymerization rate were also studied.The initiation mechanism was proposed.

Key words: Diperiodato-argentate(Ⅲ), Acrylamide, Redox initiation

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