Lu Bo, Zhang Huagui, Maazouz Abderrahim, Lamnawar Khalid
Key Laboratory of Materials Processing and Mold (Ministry of Education), National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China.
CNRS, UMR 5223, Ingénierie des Matériaux Polymères, INSA Lyon, Université de Lyon, F-69621 Villeurbanne, France.
Polymers (Basel). 2021 Jan 28;13(3):417. doi: 10.3390/polym13030417.
The multilayer coextrusion process is known to be a reliable technique for the continuous fabrication of high-performance micro-/nanolayered polymeric products. Using laminar flow conditions to combine polymer pairs, one can produce multilayer films and composites with a large number of interfaces at the polymer-polymer boundary. Interfacial phenomena, including interlayer diffusion, interlayer reaction, interfacial instabilities, and interfacial geometrical confinement, are always present during multilayer coextrusion depending on the processed polymers. They are critical in defining the microstructural development and resulting macroscopic properties of multilayered products. This paper, therefore, presents a comprehensive review of these interfacial phenomena and illustrates systematically how these phenomena develop and influence the resulting physicochemical properties. This review will promote the understanding of interfacial evolution in the micro-/nanolayer coextrusion process while enabling the better control of the microstructure and end use properties.
多层共挤出工艺是一种用于连续制造高性能微/纳米层状聚合物产品的可靠技术。利用层流条件来组合聚合物对，可以生产出在聚合物-聚合物边界处具有大量界面的多层薄膜和复合材料。根据所加工的聚合物不同，在多层共挤出过程中总会出现包括层间扩散、层间反应、界面不稳定性和界面几何限制在内的界面现象。它们对于定义多层产品的微观结构发展和最终的宏观性能至关重要。因此，本文对这些界面现象进行了全面综述，并系统地阐述了这些现象是如何发展以及如何影响最终的物理化学性质的。这篇综述将促进对微/纳米层共挤出过程中界面演变的理解，同时有助于更好地控制微观结构和最终使用性能。
