Hunley Matthew T, Pötschke Petra, Long Timothy E
Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA.
Macromol Rapid Commun. 2009 Dec 16;30(24):2102-6. doi: 10.1002/marc.200900393. Epub 2009 Sep 1.
Nanoscale fibers with embedded, aligned, and percolated non-functionalized multiwalled carbon nanotubes (MWCNTs) were fabricated through electrospinning dispersions based on melt-compounded thermoplastic polyurethane/MWCNT nanocomposite, with up to 10 wt.-% MWCNTs. Transmission electron microscopy indicated that the nanotubes were highly oriented and percolated throughout the fibers, even at high MWCNT concentrations. The coupling of efficient melt compounding with electrospinning eliminated the need for intensive surface functionalization or sonication of the MWCNTs, and the high aspect ratio as well as the electrical and mechanical properties of the nanotubes were retained. This method provides a more efficient technique to generate one-dimensional nanofibers with aligned MWCNTs.
通过基于熔融共混热塑性聚氨酯/多壁碳纳米管（MWCNT）纳米复合材料的静电纺丝分散体制备了嵌入、排列且渗透的非功能化多壁碳纳米管的纳米级纤维，MWCNT含量最高可达10重量%。透射电子显微镜表明，即使在高MWCNT浓度下，纳米管在整个纤维中也是高度取向且渗透的。高效熔融共混与静电纺丝的结合消除了对MWCNT进行强化表面功能化或超声处理的需要，并且保留了纳米管的高长径比以及电学和力学性能。该方法提供了一种更有效的技术来制备具有排列的MWCNT的一维纳米纤维。
