一维受限聚合物黏弹性的研究进展

Progress on the Viscoelasticity of Nano-Confinement Polymer

随着纳米科技的快速发展,纳米尺度聚合物薄膜的黏弹性引起了学术界的广泛关注。研究发现,当薄膜的厚度降低至与高分子链尺寸相当时,聚合物薄膜的黏弹性表现出显著偏离本体的行为。文中总结了一维受限态下聚合物薄膜黏弹性的研究进展,介绍了一维受限聚合物体系黏弹性的研究方法及其偏离本体的可能机理,最后对受限聚合物黏弹性的研究给予了展望。

The dynamics of polymers confined to nanometer length scale have attracted considerable scientific and technological interest because they affect the stability and performance of nanomaterials.The viscoelasticity of polymer approaching nanometer scale,such as viscosity,modulus,has been widely reported to deviate from its bulk properties.This paper represented a review on the viscoelasticity of the polymer films in nano-confinement.The experimental method for studying viscoelasticity of nano-confinement polymer and physical mechanisms responsible for the deviation of chain dynamic from that in bulk was summarized.Furthermore,the future development of the viscoelasticity of nano-confinement was prospected.