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首页> 外文期刊>Journal of Applied Polymer Science >Double-Nozzle Air-Jet Electrospinning for Nanofiber Fabrication
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Double-Nozzle Air-Jet Electrospinning for Nanofiber Fabrication

机译：纳米纤维制造的双喷嘴喷气静电纺丝

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摘要

A novel double-nozzle air-jet electrospinning apparatus was developed to fabricate nanofibers on a large scale. The distribution of the electric field at different nozzle distances was simulated to analyze the jet path, productivity, and deposition area of nanofiber webs and the nanofiber morphology. Our experiments showed that the bubbles usually ruptured intermittently on the top surface of the two nozzles and the jets traveled in a straight path with a high initial velocity. A continuous and even thickness of the nanofiber webs were obtained when the nozzle distances was less than 55 mm. At nozzle distances of 55 mm, the received fibers were thin with the lowest standard deviation. Experimental parameters involving the applied voltage, collecting distance, and air flow rate were also investigated to analyze the nanofiber morphology at a nozzle distance of 55 mm. The results show that the nanofibers presented a finer and thinner diameter at an applied voltage of 36 kV, a collecting distance of 18 cm, and an air flow rate of 800 mL/min. The nanofiber production of this setup increased to nearly 70 times that with a single-needle electrospinning setup. On the basis of the principle of this air-jet electrospinning setup, various arrangements of multinozzle electrospinning setups could be designed for higher throughput of nanofibers.
机译：开发了新颖的双喷嘴喷气静电纺丝设备以大规模制造纳米纤维。模拟了不同喷嘴距离处的电场分布，以分析纳米纤维网的喷射路径，生产率和沉积面积以及纳米纤维的形态。我们的实验表明，气泡通常在两个喷嘴的顶面上间歇性地破裂，并且射流沿直线路径以较高的初始速度行进。当喷嘴距离小于55mm时，获得连续且均匀的纳米纤维网厚度。在喷嘴距离为55 mm时，接收到的纤维很细，标准偏差最低。还研究了涉及施加电压，收集距离和空气流速的实验参数，以分析喷嘴距离为55 mm时的纳米纤维形态。结果表明，纳米纤维在施加的电压为36 kV，收集距离为18 cm和空气流速为800 mL / min时呈现出更细，更细的直径。这种设置的纳米纤维产量增加到单针电纺装置的近70倍。基于这种喷气电纺丝装置的原理，可以设计多喷嘴电纺丝装置的各种布置，以提高纳米纤维的产量。

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