Improvement of Aerosol Filtering Performance of PLLA/PAN Composite Fiber with Gradient Structure
Since commercial non-woven air filtering materials have unstable filtering efficiency and poor moisture permeability for the abundant condensed aerosol particles in the highly humid atmospheric environment, the PLLA/PAN composite fiber material with a hydrophobic and hydrophilic gradient structure i...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/22/4087 |
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| author | Ping Zhu Wang Sun Yunchun Liu |
| author_facet | Ping Zhu Wang Sun Yunchun Liu |
| author_sort | Ping Zhu |
| collection | DOAJ |
| description | Since commercial non-woven air filtering materials have unstable filtering efficiency and poor moisture permeability for the abundant condensed aerosol particles in the highly humid atmospheric environment, the PLLA/PAN composite fiber material with a hydrophobic and hydrophilic gradient structure is designed and prepared by using electrode sputtering electro spinning technology. By characterizing and testing the filtrating effect of SEM, XRD, FTIR, wettability, mechanical property, N<sub>2</sub> adsorption isotherm, and BET surface area, NaCl aerosol of PLLA fiber, PAN fiber, and PLLA/PAN composite fiber membranes, the study found that the electrode sputtering electrospinning is fine, the fiber mesh is dense, and fiber distribution is uniform when the diameter of the PAN fiber is 140–300 nm, and the PLLA fiber is 700–850 nm. In this case, PLLA/PAN composite fiber materials gather the hydrophobicity of PLLA fiber and the hydrophilicity of PAN fiber; its electrostatic effect is stable, its physical capturing performance is excellent, it can realize the step filtration of gas-solid liquid multiphase flow to avoid the rapid increase of air resistance in a high-humidity environment, and the filtrating efficiency <i>η</i> of NaCl aerosol particles with 0.3 μm reaches 99.98%, and the quality factor <i>Q<sub>F</sub></i> 0.0968 Pa<sup>−1</sup>. The manufacturing of PLLA/PAN composite fiber material provides a new method for designing and developing high-performance air filtration materials and a new technical means for the large-scale production of high-performance, high-stability, and low-cost polylactic acid nanofiber composites. |
| first_indexed | 2024-03-09T18:05:57Z |
| format | Article |
| id | doaj.art-5faa65f0dc7f4b7ab25a844b22c95b03 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T18:05:57Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-5faa65f0dc7f4b7ab25a844b22c95b032023-11-24T09:29:28ZengMDPI AGNanomaterials2079-49912022-11-011222408710.3390/nano12224087Improvement of Aerosol Filtering Performance of PLLA/PAN Composite Fiber with Gradient StructurePing Zhu0Wang Sun1Yunchun Liu2School of Instruments and Electronics, North University of China, Taiyuan 030051, ChinaSchool of Instruments and Electronics, North University of China, Taiyuan 030051, ChinaSchool of Instruments and Electronics, North University of China, Taiyuan 030051, ChinaSince commercial non-woven air filtering materials have unstable filtering efficiency and poor moisture permeability for the abundant condensed aerosol particles in the highly humid atmospheric environment, the PLLA/PAN composite fiber material with a hydrophobic and hydrophilic gradient structure is designed and prepared by using electrode sputtering electro spinning technology. By characterizing and testing the filtrating effect of SEM, XRD, FTIR, wettability, mechanical property, N<sub>2</sub> adsorption isotherm, and BET surface area, NaCl aerosol of PLLA fiber, PAN fiber, and PLLA/PAN composite fiber membranes, the study found that the electrode sputtering electrospinning is fine, the fiber mesh is dense, and fiber distribution is uniform when the diameter of the PAN fiber is 140–300 nm, and the PLLA fiber is 700–850 nm. In this case, PLLA/PAN composite fiber materials gather the hydrophobicity of PLLA fiber and the hydrophilicity of PAN fiber; its electrostatic effect is stable, its physical capturing performance is excellent, it can realize the step filtration of gas-solid liquid multiphase flow to avoid the rapid increase of air resistance in a high-humidity environment, and the filtrating efficiency <i>η</i> of NaCl aerosol particles with 0.3 μm reaches 99.98%, and the quality factor <i>Q<sub>F</sub></i> 0.0968 Pa<sup>−1</sup>. The manufacturing of PLLA/PAN composite fiber material provides a new method for designing and developing high-performance air filtration materials and a new technical means for the large-scale production of high-performance, high-stability, and low-cost polylactic acid nanofiber composites.https://www.mdpi.com/2079-4991/12/22/4087the electrode sputters electrospinning technologygradient structurePLLA/PAN composite fiber membranehigh humid atmospheric environmentultrafine aerosol filtrationhigh production efficiency |
| spellingShingle | Ping Zhu Wang Sun Yunchun Liu Improvement of Aerosol Filtering Performance of PLLA/PAN Composite Fiber with Gradient Structure Nanomaterials the electrode sputters electrospinning technology gradient structure PLLA/PAN composite fiber membrane high humid atmospheric environment ultrafine aerosol filtration high production efficiency |
| title | Improvement of Aerosol Filtering Performance of PLLA/PAN Composite Fiber with Gradient Structure |
| title_full | Improvement of Aerosol Filtering Performance of PLLA/PAN Composite Fiber with Gradient Structure |
| title_fullStr | Improvement of Aerosol Filtering Performance of PLLA/PAN Composite Fiber with Gradient Structure |
| title_full_unstemmed | Improvement of Aerosol Filtering Performance of PLLA/PAN Composite Fiber with Gradient Structure |
| title_short | Improvement of Aerosol Filtering Performance of PLLA/PAN Composite Fiber with Gradient Structure |
| title_sort | improvement of aerosol filtering performance of plla pan composite fiber with gradient structure |
| topic | the electrode sputters electrospinning technology gradient structure PLLA/PAN composite fiber membrane high humid atmospheric environment ultrafine aerosol filtration high production efficiency |
| url | https://www.mdpi.com/2079-4991/12/22/4087 |
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