The study on the air volume fraction of electrospun nanofiber nonwoven mats |
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| Authors: | Xiao-Hong Qin Dong-Po Xin |
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| Institution: | 1.Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles,Donghua University,Shanghai,P.R. China |
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| Abstract: | 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. |
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