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在二元链式共聚反应中,竞聚率r1,r2可以在很大范围内变化,相应F1-f1关系曲线也有多种类型。教科书中常常首先按照r1与r2的乘积(r1·r2)与1的大小关系比较进行分类,这样的分类法缺乏直观性,对初学者而言较难理解。本文直接按照r1与r2本身数值的大小提供一种更加基础的分类法,并按照相应体系分类讨论,以期对共聚反应的教学以及相关研究起到参考作用。
In binary chain copolymerization, the reactivity ratio r1, r2 can vary widely, and the corresponding F1-f1 relationship curve also has many types. Textbooks are often first classified according to the relationship between the product of r1 and r2 (r1 · r2) and the size of 1, which is less intuitive and more difficult for beginners to understand. In this paper, a more basic classification method is provided according to the values of r1 and r2 themselves, and the classification is discussed according to the corresponding system so as to serve as reference for the teaching of copolymerization reaction and related research.