Dispersion and alignment of carbon nanotubes in polycarbonate
Dispersion and alignment of carbon nanotubes in polycarbonate
复制标题
碳纳米管在聚碳酸酯中的分散和排列
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
Z. Ren
中科院分区：
文献类型：
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作者：
M. Sennett;E. Welsh;J. Wright;Wenzhi Li;J. Wen;Z. Ren
摘要：研究了碳纳米管在热塑性聚合物如聚碳酸酯中的分散和排列。通过在锥形双螺杆挤出机中混合来完成分散，并使用纤维纺丝装置进行对准。研究了混合时间和纤维拉伸速率对分散和取向的影响。在挤出机中以相对短的停留时间产生均匀的分散体。当纤维拉伸速率大于70 m/min时，获得了纳米复合材料长丝中碳纳米管的良好排列。密切控制碳纳米管在聚合物中的分散和排列的能力有望导致具有理想的电子和结构性能的纳米复合材料的发展。
Abstract.Dispersion and alignment of carbon nanotubes in thermoplastic polymers such as polycarbonate have been studied. Dispersion was accomplished by mixing in a conical twin-screw extruder and alignment was carried out using a fiber-spinning apparatus. The effects of mixing time and fiber draw rates on dispersion and alignment were investigated. Uniform dispersions were produced with relatively short residence times in the extruder. Excellent alignment of carbon nanotubes in nanocomposite filaments was obtained when the fiber draw rate was greater than 70 m/min. The ability to closely control the dispersion and alignment of carbon nanotubes in polymers is expected to lead to the development of nanocomposites with desirable electronic and structural properties.