Su Shijie, Liang Junsheng, Xu Shuangchao, Li Xiaojian, Xin Wenwen, Wang Zizhu, Wang Dazhi
Key Laboratory for Micro/Nano Technology and System of Liaoning Province, Dalian University of Technology, Dalian 116023, People's Republic of China.
Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian 116023, People's Republic of China.
Nanotechnology. 2021 Apr 9;32(26). doi: 10.1088/1361-6528/abf073.
Electrospinning is a simple, cost-effective, and versatile technique for fabrication of nanofibers. However, nanofibers obtained from the conventional electrospinning are typically disordered, which seriously limits their application. In this work, we present a novel and facile technique to obtain aligned nanofibers with high efficiency by using parallel inductive-plates assisted electrospinning (PIES). In this new electrospinning setup, the electrostatic spinneret is contained in a pair of parallel inductive-plates, which can change the shape and direction of the electric field line during the electrospinning so as to control the flight trajectory and spatial alignment of the spinning nanofibers. This electrospinning setup can divide the electric field line into two parts which are respectively directed to the edge of the upper and lower inductive-plates. Then the nanofibers move along the electric field line, suspend and align between the parallel inductive-plates. Finally, the well aligned nanofibers could be easily transferred onto other substrates for further characterizations and applications. The aligned nanofibers with an average diameter of 469 ± 115 nm and a length as long as 140 mm were successfully achieved by using PIES technique. Moreover, nanofiber arrays with different cross angles and three-dimensional films formed by the aligned nanofibers were also facilely obtained. The novel PIES developed in this work has been proved to be a facile, cost-effective and promising approach to prepare aligned nanofibers for a wide range of applications.
静电纺丝是一种用于制造纳米纤维的简单、经济高效且通用的技术。然而，通过传统静电纺丝获得的纳米纤维通常是无序的，这严重限制了它们的应用。在这项工作中，我们提出了一种新颖且简便的技术，即使用平行感应板辅助静电纺丝（PIES）高效地获得排列整齐的纳米纤维。在这种新的静电纺丝装置中，静电喷丝头包含在一对平行感应板中，这可以在静电纺丝过程中改变电场线的形状和方向，从而控制纺丝纳米纤维的飞行轨迹和空间排列。这种静电纺丝装置可以将电场线分为两部分，分别指向上下感应板的边缘。然后纳米纤维沿着电场线移动，在平行感应板之间悬浮并排列。最后，排列良好的纳米纤维可以很容易地转移到其他基板上进行进一步表征和应用。通过PIES技术成功获得了平均直径为469±115 nm且长度长达140 mm的排列整齐的纳米纤维。此外，还轻松获得了具有不同交叉角度的纳米纤维阵列以及由排列整齐的纳米纤维形成的三维薄膜。在这项工作中开发的新型PIES已被证明是一种简便、经济高效且有前景的方法，可用于制备排列整齐的纳米纤维以用于广泛的应用。
