Direct fabrication of composite and ceramic hollow nanofibers by electrospinning
Direct fabrication of composite and ceramic hollow nanofibers by electrospinning
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DOI：
10.1021/nl049590f
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发表时间：
2004-05-01
期刊：
影响因子：
10.8
通讯作者：
Xia, YN
中科院分区：
文献类型：
--
作者：
Li, D;Xia, YN
通过同轴双毛细管喷丝器，静电纺丝两种不混溶的液体，然后选择性地去除芯，制备了以无机/聚合物复合材料或陶瓷为壁的中空纳米纤维。该技术的能力和可行性已被证明制备二氧化钛/聚合物或锐钛矿纳米管，其尺寸和壁厚可以通过控制一组实验参数独立改变。鞘液中溶胶-凝胶前体的存在对于形成稳定的同轴射流和具有坚固壁的中空纤维是必要的。这些长空心纳米纤维的圆形截面、均匀尺寸和良好控制的led方向在制造流体器件和光波导方面具有特别的吸引力。
Hollow nanofibers with walls made of inorganic/polymer composites or ceramics have been prepared by electrospinning two immiscible liquids through a coaxial, two-capillary spinneret, followed by selective removal of the cores. The capability and feasibility of this technique have been demonstrated by the fabrication of titania/polymer or anatase nanotubes whose size and wall thickness could be independently varied by controlling a set of experimental parameters. The presence of a sol-gel precursor in the sheath liquid was necessary for the formation of stable, coaxial jets and hollow fibers with robust walls. The circular cross-section, uniform size, and well-control led orientation of these long hollow nanofibers are particularly attractive for use in fabricating fluidic devices and optical waveguides.