高分子结晶的新进展、新模型

回顾了高分子结晶经典模型－成核与生长模型，讨论了近年来高分子结晶研究的新结果，新进展，特别介绍了德国著名高分子物理学家Strobl提出的高分子结晶是从熔体先形成中间相，中间相转变为小晶块，最后小晶块融合为均匀为片晶的全新模型。

The New Development and New Models in the Crystallization of Polymers

How polymers crystallize? This question stands for long time and argues for many years. Over the years various conceptual models have been proposed and work out. Among them, nucleation and growth theory, which developed by Hoffman and Lauritzen, is now widely used and dominant in the data treatment. However the recent results show that the formation and growth of lamellar cyrstallites is a multi-step process passing over intermediate states. This new development and new models are summarized in this paper. The novel model developed by Prof.Strobl is favorably induced. It is proposed that the initial step is always the creation of mesomorphic layer which spontaneously thickens, up to critical value, where it solidifies through a cooperative structural transition. The transition produces a granular crystalline layer, which transforms in the last step into homogeneous lamellar crystallites.