The study on the air volume fraction of electrospun nanofiber nonwoven mats
The study on the air volume fraction of electrospun nanofiber nonwoven mats
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DOI：
10.1007/s12221-010-0632-7
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发表时间：
2010-09
影响因子：
2.5
通讯作者：
X. Qin;Dongqun Xin
中科院分区：
文献类型：
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作者：
X. Qin;Dongqun Xin
静电纺丝是一种利用电驱动射流生产直径从纳米到几微米的聚合物纤维的有效方法。静电纺纳米纤维无纺布可应用于不同的空气体积分数要求较高的领域，尤其适用于保暖性好的纺织材料。本文通过对静电纺纳米纤维非织造垫中的纤维体积分数的研究，验证了静电纺纳米纤维非织造垫中的空气体积分数。导出了纤维体积分数与纤维直径的关系，纤维体积分数与纤维半径的平方成正比。经实验验证，将聚合物浓度固定在8%即可得到空气体积分数约99%的静电纺PAN纳米纤维非织造垫。电压固定在20kv，针尖到集电极的距离为15cm。实验结果与理论非常吻合。
Electrospinning is an efficient method to produce polymer fibers with a diameter range from nanometers to a few microns using an electrically driven jet. Electrospun nanofiber nonwoven fabrics can be applied into different areas with higher air volume fraction, especially applied into textile materials with good warmth retention property. In this article, the air volume fraction in nonwoven mats made of electrospun nanofibers was verified by studying fiber volume fraction in the mats. Then the relationship between fiber volume fraction and fiber diameter was derived, and the fiber volume fraction is in direct ratio to the square of fiber radius. By experimental verification, to get electrospun PAN nanofiber nonwoven mats with high air volume fraction about 99 %, it can fix the polymer concentration on 8 %. The voltage fixed on 20 kV, the tip-to-collector distance on 15 cm. The experiment is in accordance with the theory excellently.