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从不同结构层次角度说明了多嵌段共聚物的分子组成不均一性。提出了一种新的看法,即在讨论多嵌段共聚物的形态和性能时,除了链段间的微相分离外,还必须首先考虑不同平均链段长度的多嵌段大分子间的宏观相分离作用。如何表征与控制其组成不均一性是十分重要的课题。
The structural heterogeneity of multiblock copolymers is illustrated from different structural levels. A new view was proposed that in discussing the morphology and properties of multiblock copolymers, in addition to the micro-phase separation between the segments, the macroscopic view of multiblock macromolecules with different average segment lengths must first be considered Phase separation effect. How to characterize and control the compositional heterogeneity is a very important issue.