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一、前言共聚合作用是改进高分子聚合物性能最重要的方法之一,它能使我们按照需要而改变聚合物的物理——机械与化学性质。共聚物不但具有各单聚物的优点,而且大多能具有单一聚合物所不能具有的性能。所以近年来在橡胶、塑料及合成纤维等工业上得到广泛的应用。共聚物的理化性质,主要决定于参与共聚的物质的化学成分及这些共聚组分在整个聚合物分子链中分布的均匀性。由于参与反应单体的相对反应性与相对反应速度的不同,使聚合物组成中共聚单体的比例与反应单体比例不相一致。例如合成纤维维尼縈N
I. Introduction Copolymerization is one of the most important ways to improve the properties of polymers. It allows us to change the physical-mechanical and chemical properties of polymers as needed. Copolymers not only have the advantages of each monomer, but most often have the properties that a single polymer can not. So in recent years in rubber, plastics and synthetic fibers and other industries have been widely used. The physical and chemical properties of the copolymer, mainly depends on the chemical composition of the material involved in the copolymerization and the distribution of these copolymer components in the polymer chain uniformity. Due to the relative reactivity of the reactive monomer involved and the relative speed of reaction, the proportion of comonomer in the polymer composition does not agree with the proportion of the reactive monomer. For example, synthetic fiber pirfenone N