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研究分子量分布的意义高聚物的分子是由单体分子聚合而成,除了少数几种蛋白质外,其分子量是不均一的。分子量多分散性是高聚物的基本特性之一,其多分散程度决定于聚合反应的机理,试样的处理过程,以及老化裂解等影响。高聚物所表現的性质,均为其不同分子量的分子对此种性质供献的总和。因此研究高聚物的分子量分布,无论对力学性能或溶液性质的了解,以及聚合机理的探討,产品质量的控制与改进都有重要的意义。聚合及降解反应的机理无疑是聚合或降解产物分子量分布的决定因素,从反应动力学可以导出分子量
The significance of studying the molecular weight distribution Polymer molecules are formed by the polymerization of monomer molecules, with the exception of a few proteins, the molecular weight is not uniform. Polydispersity is one of the basic properties of polymers. The degree of polydispersity depends on the polymerization mechanism, the sample handling, and the effect of aging cracking. The properties exhibited by polymers are the sum of their contributions to this property for molecules of different molecular weights. Therefore, it is of great significance to study the molecular weight distribution of polymers, both in terms of the understanding of mechanical properties or solution properties, and in the investigation of polymerization mechanism, and in the control and improvement of product quality. The mechanism of polymerization and degradation reaction is undoubtedly the determining factor of the molecular weight distribution of the polymerization or degradation products. From the reaction kinetics, the molecular weight