In this work polyacrylonitrile (PAN)/ single wall carbon nanotube (SWNT) composites with 50 wt% SWNT loading were studied. A previously studied solvent-based phase separation process was used to enhance PAN-SWNT crystallization conditions and interphase formation within the composites. Two types of SWNT species were used here to produce two composites materials with well-ordered PAN-SWNT interphase structures. All precursor composite films were stabilized and subsequently carbonized at temperatures ranging from 900 to 1500 °C under various carbonization times. Wide-angle X-ray diffraction and electron microscopy were used to analyze the structural change in these precursors during carbonization. It was found that ordered graphitic structures were formed using specific temperature/time conditions as early as 900 °C. This low-temperature graphitic structure can be tracked directly to the PAN interphase structure within the precursors. This paper discusses the linkage between precursor PAN-SWNT interphase formation and subsequent low-temperature graphitic formation.

在这项工作中，研究了聚丙烯酰胺（PAN）/单壁碳纳米管（SWNT）复合材料的SWNT含量为50 wt％。先前研究的基于溶剂的相分离过程用于增强PAN-SWNT的结晶条件和复合材料内相间的形成。这里使用两种类型的SWNT物质来生产两种具有良好有序PAN-SWNT相间结构的复合材料。所有前体复合薄膜均经过稳定处理，随后在900到1500°C的温度下在各种碳化时间下碳化。广角X射线衍射和电子显微镜用于分析碳化过程中这些前体的结构变化。已经发现使用特定的温度/时间条件早在900°C即可形成有序的石墨结构。可以将这种低温石墨结构直接追踪到前体中的PAN相结构。本文讨论了前体PAN-SWNT相间形成与随后的低温石墨形成之间的联系。