【作者】 文睿； 柯凯； 王宇； 杨伟； 谢邦互； 杨鸣波；

【Author】 WEN Rui,KE Kai,WANG Yu,YANG Wei~*,XIE Banghu,YANG Mingbo (College of Polymer Science and Engineering,Sichuan University,State Key Laboratory of Polymer Materials Engineering, Chengdu,610065 Sichuan,China)

【机构】 四川大学高分子科学与工程学院高分子材料工程国家重点实验室；

【摘要】 <正>碳纳米管由于具有优异的机械、光学、电、磁及热性能而被广泛应用,常作为填料加入到聚合物基体中制成纳米复合材料。在过去的十几年里,聚合物/碳纳米管纳米复合材料因其优异的性能而受到了广泛的关注,然而复合材料的性能很大程度上依赖于其填料在基体中的分散和取向。这种分散和取向受到了广泛的关注,并且很多文献报道了这一领域上的研究成果。填更多还原

【Abstract】 Polyvinylidene fluoride(PVDF)/multiwalled carbon nanotubes(MWCNTs) nanocomposites were prepared by solution blending method and the melt viscoelastic behavior of the composites was studied.The results showed that the dispersion of MWCNTs in the matrix and the surface characteristic of MWCNTs had a profound influence on the melt rheological behaviors of the nanocomposites.Generally,the dynamic storage modulus of the nanocomposites with well dispersed MWCNTs was greatly improved.However,at an MWCNTs loading of 2wt%,PVDF/MWCNTs-g-OH nanocomposites exhibited more significant solid-like behavior and network structure than PVDF/MWCNTs and at a even higher loading of MWCNTs.Even though the dispersion of MWCNTs-g-OH was poorer than that of virgin MWCNTs owing to the higher interfacial interactions from van der Waals force and hydrogen bonding.In this case,the influence of the interfacial interactions on the melt rheological properties was stronger than the dispersion state.更多还原