Vyazovkin Sergey
Department of Chemistry, University of Alabama at Birmingham, 901 S. 14th Street, Birmingham, AL 35294, USA.
Polymers (Basel). 2020 May 7;12(5):1070. doi: 10.3390/polym12051070.
The objective of this review paper is to survey the phase transition kinetics with a focus on the temperature dependence of the rates of crystallization and melting, as well as on the activation energies of these processes obtained via the Arrhenius kinetic treatment, including the treatment by isoconversional methods. The literature is analyzed to track the development of the basic models and their underlying concepts. The review presents both theoretical and practical considerations regarding the kinetic analysis of crystallization and melting. Both processes are demonstrated to be kinetically complex, and this is revealed in the form of nonlinear Arrhenius plots and/or the variation of the activation energy with temperature. Principles which aid one to understand and interpret such results are discussed. An emphasis is also put on identifying proper computational methods and experimental data that can lead to meaningful kinetic interpretation.
本综述论文的目的是研究相转变动力学，重点关注结晶和熔化速率的温度依赖性，以及通过阿伦尼乌斯动力学处理（包括等转化率方法处理）获得的这些过程的活化能。对文献进行分析以追踪基本模型及其基本概念的发展。本综述介绍了关于结晶和熔化动力学分析的理论和实际考虑因素。这两个过程在动力学上都很复杂，这表现为非线性阿伦尼乌斯图和/或活化能随温度的变化。讨论了有助于理解和解释此类结果的原理。还强调了确定能够得出有意义的动力学解释的适当计算方法和实验数据。
