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高分子的微观晶体生长动力学理论是高分子科学的重要研究课题之一。本文系统地介绍了近年来发展起来的高分子晶体生长动力学模型—链内成核模型。该模型能够对高分子结晶过程中的链折叠现象、分子分凝现象、二元链长共结晶现象、Regime转变现象和半晶织构现象给出较为合理的解释。这些现象为高分子结晶所特有,揭示了高分子有序化相转变行为的特殊性。在结语部分,本文还对比描述了以链间成核模式为主的一些情景,并对链内成核模型的进一步发展做了展望。
The theory of macromolecular crystal growth kinetics is one of the important research topics in polymer science. This article systematically introduces the polymer crystal growth kinetic model developed in recent years - intra-chain nucleation model. The model can give a more reasonable explanation for the phenomenon of chain folding, molecular segregation, binary cocrystallization, Regime transition and semi-crystalline texture in the process of polymer crystallization. These phenomena are peculiar to the crystallization of macromolecules, revealing the peculiarities of macromolecular ordered phase transition behavior. In conclusion, this paper also describes some of the main inter-chain nucleation modes, and prospects the further development of the intra-strand nucleation model.