Morphology optimization of polymer nanofiber for applications in aerosol particle filtration

Polymer nanofiber mats with various morphology structures (nanofiber, beaded-nanofiber, and composite particle/nanofiber) were prepared by electrospinning for application to aerosol particle filtration. The filtration performance of these polymer nanofiber mats was evaluated based on quality factors generated from measurement of penetration through the filter by sodium chloride (NaCl) aerosol particles ranging from 20 to 300 nm. These filtration test results showed that the quality factors of beaded-nanofiber filter mats were the best, even though the aerosol particle penetration of them was the highest of the morphology structures. The results of the present study show that morphology optimization of polymer nanofibers is an effective method for improvement of filtration performance, and it must be the future direction for development of new filtration media.

Polymer nanofiber mats with various morphology structures (nanofiber, beade-nanofiber, and composite particle/nanofiber) were prepared by electrospinning for application to aerosol particle filtration. The filtration performance was evaluated based on quality factors generated from measurement of penetration through the filter by sodium chloride (NaCl) aerosol particles ranging from 20 to 300 nm.Figure optionsDownload as PowerPoint slideResearch highlights▶ Polymer nanofiber mats were prepared by electrospinning. ▶ The morphology of nanofiber can be modified by changing the precursor concentration. ▶ Polymer nanofiber mats were used as filtration media of aerosol particles. ▶ The filtration performance was evalutated based on quality factors. ▶ The quality factor of beaded-nanofiber mats were the best.