高分子材料在最近一些年来发展很快,用途也日益广泛。高分子物质所不同于一般小分子物质,除了它具有分子量大及分子量分布特征外,还具有一些独特的微观结构特征。特别是微观结构特征与它的物理性质和机械性能有密切的关系。因此,测定和描述高分子的微观结构是高分子材料研究中进行分子设计,合成出满足人们日新月异要求的材料的关键性问题。高分子的微观结构有许多层次,除了结构单元(或重复单元)的化学结构外,尚有高分子链的线形,支化和交联等三种类型及其重复单元的构型差异而带来的序列分布即 Polymer materials in recent years the rapid development of the use is also increasingly widespread. Polymer material is different from the general small molecules, in addition to its molecular weight and molecular weight distribution characteristics, but also has some unique microstructural features. In particular, the microstructural features are closely related to its physical properties and mechanical properties. Therefore, the determination and description of the microstructure of polymers is a key issue in the molecular design of polymer materials and in the synthesis of materials that meet the rapidly changing requirements of the people. In addition to the chemical structure of the structural unit (or repeating unit), there are three types of polymer chains, such as linear, branched and cross-linked, and the configuration differences of their repeating units The sequence distribution is