ABSTRACT

Graphene-based elastomer composites with a segregated structure were prepared by electrostatic self-assembly. The morphology and microstructures of the composites were characterised by scanning electron microscope (SEM) and transmission electrical microscope (TEM). The segregated network leads to a low gas permeability coefficient for BIIR composites. With the incorporation as low as 0.4 wt-% GTA-GO, the helium permeability coefficient decreased about 63% when compared with that of neat BIIR. The tensile strength and percentage elongation increased with an increase in the GTA-GO content. This is attributed to the complete exfoliation, uniform dispersion and the segregated structure of GTA-GO in the BIIR matrix. These results demonstrate that such electrostatic self-assembly method between latex and sheet-fillers is an effective strategy to design and produce polymeric nanocomposites with good gas barrier properties. The results will effectively promote the application of barrier polymer in the production of protective clothing, gas storage devices and coatings.

摘要

通过静电自组装制备了具有偏析结构的石墨烯基弹性体复合材料。采用扫描电镜（SEM）和透射电镜（TEM）对复合材料的形貌和微观结构进行表征。隔离网络导致 BIIR 复合材料的透气系数低。当掺入量低至 0.4 wt-% GTA-GO 时，与纯 BIIR 相比，氦渗透系数降低了约 63%。抗拉强度和伸长率随着 GTA-GO 含量的增加而增加。这归因于 GTA-GO 在 BIIR 基质中的完全剥离、均匀分散和分离结构。这些结果表明，这种乳胶和片状填料之间的静电自组装方法是设计和生产具有良好气体阻隔性能的聚合物纳米复合材料的有效策略。研究结果将有效促进阻隔聚合物在防护服、储气装置和涂料生产中的应用。