微纳层共挤出技术是通过在传统共挤口模处安装若干层倍增器制备交替多层聚合物功能复合材料的一种高效、便捷的方法。层倍增器中独特的流道设计和特殊力场作用是实现聚合物层状熔体高效叠加和对多相体系形态进行原位调控的关键。研究发现,通过两相交替层状排布形成的受限层空间和丰富的层界面可以赋予材料独特的力学、阻隔、光电等性能。本文结合我们在微纳层状复合材料方面的研究,对近年来有关聚合物微纳层状复合结构与性能的研究进展进行综述。
Micro-/nanolayer coextrusion is one of efficient and convenient ways to fabricate alternating multilayer functional materials by combining an assembly of layer multiplying elements (LMEs) with a conventional coextrusion block. Due to a special design of channels and force fields, LME plays a significant role in the layer multiplication and morphological control of the polymeric melt. Studies found that the confined space and rich interfaces formed in the alternating multilayer structure endowed the final products with unique mechanical, barrier, optical and other properties. This paper presents a review of the recent research progress of the structure and properties of micro-/nanolayer polymer composites in our group.