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Fractal Characteristics of Porosity of Electrospun Nanofiber Membranes

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  • Ting Wang
  • Ying Chen
  • Wenxia Dong
  • Yong Liu
  • Luoyi Shi
  • Rudong Chen
  • Tiandi Pan

Abstract

In this paper, the method of measuring the porosity of electrostatic nanofiber membrane by VC++ and Matlab is introduced. It is found that the ratio of the calculated porosity to the porosity measured by the mercury intrusion method accords with the famous Feigenbaum constant ( ). The porosity distribution of nanofiber membranes was studied by VC++ and Matlab based on the image obtained by using a scanning electron microscope. The porosity distribution calculated by using a computer is magnified by times which was named as relative porosity distribution. According to the relative porosity distribution, we use the algorithm proposed by Grassberger and Procaccia (briefly referred to as the G-P algorithm) to calculate the correlation fractal dimension. The correlation fractal dimension calculated from the relative porosity distribution series was between 1 and 2, consistent with geometric characteristics of coincidence samples. The fractal meaning of the Feigenbaum constant was verified again. In the end, we obtained the relationship between the associated fractal dimension and the filtration resistance by fitting in accordance with the secondary function relationship and reached the maximum correlation fractal dimension when the filtration resistance was 15–20 pa.

Suggested Citation

  • Ting Wang & Ying Chen & Wenxia Dong & Yong Liu & Luoyi Shi & Rudong Chen & Tiandi Pan, 2020. "Fractal Characteristics of Porosity of Electrospun Nanofiber Membranes," Mathematical Problems in Engineering, Hindawi, vol. 2020, pages 1-8, February.
    • Handle: RePEc:hin:jnlmpe:2503154
    DOI: 10.1155/2020/2503154
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