将流速梯度场与静电纺丝设备相结合,利用原位本体聚合方法,制备了超长的PMMA/CNT复合纳米丝,并实现了纳米丝的有序收集和CNTs在其内部的定向排列.通过SEM、FT-IR、TEM检测表明所制备的超长复合纳米丝直径约为100nm,长度可达数米,且光滑连续、平行排列;CNTs在复合纤维中均匀分散,沿轴向平行排列,且与PMMA分子间存在化学键;CNTs质量分数为8％时,复合纤维电导率比纯PMMA提升了10个数量级;通过偏振拉曼光谱得到了CNTs的定向因子;分析了石英毛细管内部纺丝液对CNTs取向一致的诱导作用.
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