Volume 8, Issue 1 (4-2018)                   JHSW 2018, 8(1): 29-42 | Back to browse issues page

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Habibi Mohraz M, Golbabaei F, Je Yu I, Sedigh Zadeh A, Mansournia M A, Farhang Dehghan S. Investigating effective parameters on the nanoparticles air filtration using Polyurethane nanofiber mats. JHSW. 2018; 8 (1) :29-42
URL: http://jhsw.tums.ac.ir/article-1-5805-en.html
1- Ph.D, Department of Occupational Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
2- Professor, Department of Occupational Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran , fgolbabaei@sina.tums.ac.ir
3- Professor, Institute of Nano Products Safety Research, Hoseo University, Asan, Korea
4- Associate Professor, Nuclear Science and Technology Research Institute, Environmental Engineering Laboratory, Tehran, Iran
5- Assistant Professor, Department of Epidemiology and Biostatistics, Tehran University of Medical Sciences, Tehran, Iran
6- Assistant Professor, Department of Occupational Health, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Abstract:   (744 Views)

Introduction: Electrospun nanofibers are suitable option to synthesize filtering mats for nanoparticles. This study was aimed to fabricate polyurethane nanofiber mats through electrospinning process and to investigate the effect of different parameters such as packing density, face velocity and particle type on the filtration efficiency and quality factor of electrospun polyurethane nanofiber mats.
 

Material and Method: The nanofiber mats were produced by electrospinning  process. Polyurethane granules were dissolved (15w/w%) in a solvent system consisting of dimethylformamide and tetrahydrofuran (3:2). Then, the filtration performance testing system was made at the Fluid Mechanics Department of Hanyang University of South Korea and the filtration efficiency and pressure drop of prepared nanofiber mats were studied.
 

Result: Findings showed that by increasing the duration of electrospinning, the basis weight, thickness, packing density, initial pressure drop and filtration efficiency of the mats increased, and the quality factor of the mats decreased due to the increase of the pressure drop. The increase in electrospinning duration from 15 to 45 minutes was led to the increase in pressure drop from 7 to 32 Pa and the average filtration efficiency was increased about 9-10% for KCl and DEHS test particles. The filtration efficiency and quality factor of the prepared polyurethane nanofiber mats were declined with the increase of filtration face velocity from 2 to 5 and 10 cm/s. The reduction in filtration efficiency was more obvious for particles smaller than 425 nm.
 

Conclusion: The results demonstrated that prepared polyurethan naofiber mats provide acceptable filtration performance. What is more, such nanofiber mats can have other potential benefits such as light basis weight, low thickness and simple production.

Full-Text [PDF 1697 kb]   (283 Downloads)    
Type of Study: Research | Subject: Special
Received: 2018/03/10 | Accepted: 2018/03/10 | Published: 2018/03/10

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