通过对共轴电纺内流体溶液浓度和流速的调控得到4种具有不同内部结构的TiO2微纳米纤维,即具有"微孔"、"囊泡"、"竹节"和"管"状结构的TiO2微纳米纤维,实现了对纤维内部结构的有效控制,对于新型仿生中空纤维的研究具有重要意义.
In a typical coaxial electrospinning process,we fabricated TiO2 micro/nanofibers with distinct hierarchical structure by controlling the flow rate and the concentration of the inner fluid.There are "microporous","vesicle","articuliform" and "tube" structure four kinds of typical morphology in the cores of the composite nanofibers.It is a quite simple and powerful method for fabricating hollow fibers with controllable structures,which will have wonderful applications in novel bioinspired materials.