Experimental and theoretical study on the electrospinning nanoporous fibers process

• Mechanical mechanism of electrospun porous nanofibers process was studied.
• A simplifying gas–liquid two-phase flow model was established.
• Bernoulli equation was used to study the electrospinning “splaying” process.
• The theoretical results were in good agreement with the experimental data.
• The electrospinning parameters affected the surface morphology of charged jet.

Porous materials can be prepared by sol–gel method, hydrothermal synthesis method, electrospinning and other methods. In this paper, electrospun porous nanofibers were prepared by adjusting electrospinning parameters. And the properties of obtained porous nanofiber mats were investigated. Theoretical analysis and experiment research were carried out to research mechanical mechanism of electrospun porous nanofibers, and could be used to optimize and control the porous structure. The theoretical analysis results were further verified according to the experimental data. In addition, Bernoulli equation was used to study the electrospinning “splaying” process. We found the ratio of pore width to pore length was varied along with the variation of the internal pressure of the jet, and the internal pressure of the jet increases with the velocity of the charged jet decreases.

Figure optionsDownload as PowerPoint slide