中文摘要：

本文结合与聚合物加工过程密切相关的界面扩散问题,从动力学和热力学两方面综述了与聚合物界面互扩散相关的基础理论.结合在聚合物界面扩散方面的研究进展,系统介绍了聚合物熔体界面扩散的常用研究方法.对其中的流变学方法的原理及进展作了重点论述,该方法不仅可以有效表征聚合物熔体界面扩散的动力学过程,进一步从分子动力学角度发展并完善聚合物扩散理论,而且对于聚合物加工成型过程的界面结构设计和性能优化起到关键的指导作用.本文最后提出了聚合物熔体界面扩散研究中存在的问题并对其前景进行了展望.

英文摘要：

Regarding to the interfacial diffusion studies strongly relating to the polymer processing,this article provides a review on the basic theories of mutual diffusion at polymer interfaces from the dynamics and thermodynamics viewpoints. Various conventional methods used to study the interfacial diffusion of polymer melts are systematically introduced according to the research progresses on polymer interfacial diffusion. In particular, rheology as a newly developed method to determine effectively the dynamic interfacial diffusion process of polymer melts, is emphasized in details in the aspects of its application principle and progress, which plays important roles in developing the polymer diffusion theories from the molecular dynamics viewpoint and helps design interfacial structures of polymers and improve performances of polymers in the processing. The prospects of studying the interfacial diffusion of polymer melts are proposed.