共聚物增容剂对高分子共混物形态与流变行为的影响

Influence of Copolymer Compatibilizers on the Morphology and Rheological Behavior of Immiscible Polymer Blends

共聚物增容剂可以提高不相容高分子共混物两相的相容性,从而强化共混物的宏观机械性能。增容剂通过对共混物界面性质的改善,对共混物的相形态和粘弹性都有很大的影响。目前对增容作用的研究已不再局限于对其增容原理的探索及增容效果的评价,还集中于揭示增容剂对高分子共混物在流场下的形态演变与流变行为的影响。本文从上述方面对近期的研究进展进行了总结,并归纳了增容剂的分子结构、加工条件等因素对流场下增容体系微观结构形成的影响。

Copolymer compatibilizers can improve the macroscopic mechanical properties of incompatible polymer blends by improving compatibility of the two homopolymers.The phase morphology and viscoelasticity of polymer blends are also influenced for the improvement of interfacial properties.In this paper,recent progresses on the mechanism and effect evaluation of copolymer compatibilization together with the morphology-rheology correlation of compatibilized polymer blends under flow have been reviewed.Special emphasis is put on the influence of the molecular structure of copolymer and processing conditions on the microscopic dynamics of structural formation during blending.