KINETIC ANALYSIS OF CO-CONDENSATION POLYMERIZATION OF AB_2 AND AB MONOMERS  

作　　者：颜德岳 

机构地区：[1]College of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

出　　处：《Chinese Journal of Polymer Science》2004年第2期155-167,共13页高分子科学（英文版）

基　　金：The Project Supported by the National Natural Science Foundation of China (No. 50233030)

摘　　要：This work deals with the kinetics of co-condensation polymerization of AB2 and AB monomers, giving expressions of the two-dimensional molecular weight distribution function and the number/weight average molecular weights of the resulting copolymers. The two-dimensional molecular weight distribution depends on two indices, n and l, which are the respective numbers of AB2 and AB units in a copolymer species. The evolution of the two-dimensional weight and z distributions during the co-condensation polymerization has been evaluated systematically. Finally, the two-dimensional distribution was transformed into a one-dimensional molecular weight distribution with only one variable (the molecular weight of the products instead of the degree of polymerization). The calculated results show that the highly branched copolymer has a very broad molecular weight distribution when the co-condensation polymerization approaches completion.This work deals with the kinetics of co-condensation polymerization of AB2 and AB monomers, giving expressions of the two-dimensional molecular weight distribution function and the number/weight average molecular weights of the resulting copolymers. The two-dimensional molecular weight distribution depends on two indices, n and l, which are the respective numbers of AB2 and AB units in a copolymer species. The evolution of the two-dimensional weight and z distributions during the co-condensation polymerization has been evaluated systematically. Finally, the two-dimensional distribution was transformed into a one-dimensional molecular weight distribution with only one variable (the molecular weight of the products instead of the degree of polymerization). The calculated results show that the highly branched copolymer has a very broad molecular weight distribution when the co-condensation polymerization approaches completion.

关 键 词：Hyperbranched copolymer Kinetic analysis Molecular weight distribution 

分 类 号：O631.5[理学—高分子化学]