本项目拟采用高速扫描Flash DSC结合动力学蒙特卡罗分子模拟，系统研究低温区由于高分子扩散能力有限而导致结晶速率较慢时发生结晶的微观动力学机理。目标是根据实验现象，从分子水平上深入探究不同高分子化学结构所导致的分子间和分子内相互作用变化和非晶态低温区松弛演化对结晶动力学的影响。所研究的结果对我们进一步理解高分子结晶基本原理和低温焓松弛机理具有重要意义，并有助于进一步从理论上指导高分子材料在较低温区加工结晶的实践。

In this project, we plan to employ fast-scan Flash DSC in combination with kinetic Monte Carlo simulation, for a systematic study of microscopic mechanism of polymer crystallization kinetics suppressed by the limited polymer diffusion barrier in the low temperature region. We aim to make molecular level exploration, on the basis of experimental observations, for the influences of different polymer chemical structures with variable intermolecular and intramolecular interactions on crystallization kinetics in the low temperature region. The achieved results will be meaningful to deepen our understanding of fundamental principles of polymer crystallization as well as of the relaxation mechanism of low-temperature enthalpy, and help to provide a theoretical guide to the practical crystallization of polymer processing in the low temperature region.