Kinetic model of living ionic polymerization with three active species  

作　　者：颜德岳 叶鹏 张鸿安 

出　　处：《Science China Chemistry》1998年第3期278-284,共7页中国科学（化学英文版）

基　　金：ProjectsupportedbytheNationalNaturalScienceFoundationofChina (GrantNo .2 94 74 16 3) .

摘　　要：Various molecular parameters of the resulting polymer, such as number and weight average degrees of polymerization and polydispersity index, were derived for the ionic polymerization with a three state mechanism. Numerical calculation indicated that the molecular weight distribution of the resultant polymer is rather narrow at high monomer conversion even though the three coexisting species possess rather different reactivities, and that additional foreign counterions result in a narrower molecular weight distribution.Various molecular parameters of the resulting polymer, such as number- and weight-average degrees of polymerization and polydispersity index, were derived for the ionic polymerization with a three-state mechanism. Numerical calculation indicated that the molecular weight distribution of the resultant polymer is rather narrow at high monomer conversion even though the three coexisting species possess rather different reactivities, and that additional foreign counterions result in a narrower molecular weight distribution.

关 键 词：LIVING POLYMERIZATION KINETICS trimodal mechanism POLYDISPERSITY index. 

分 类 号：O631[理学—高分子化学]