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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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Autores principales: Zhu, Ping, Sun, Wang, Liu, Yunchun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9697973/
https://www.ncbi.nlm.nih.gov/pubmed/36432372
http://dx.doi.org/10.3390/nano12224087
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author Zhu, Ping
Sun, Wang
Liu, Yunchun
author_facet Zhu, Ping
Sun, Wang
Liu, Yunchun
author_sort Zhu, Ping
collection PubMed
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(2) 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 η of NaCl aerosol particles with 0.3 μm reaches 99.98%, and the quality factor Q(F) 0.0968 Pa(−1). 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.
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spelling pubmed-96979732022-11-26 Improvement of Aerosol Filtering Performance of PLLA/PAN Composite Fiber with Gradient Structure Zhu, Ping Sun, Wang Liu, Yunchun Nanomaterials (Basel) Article 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(2) 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 η of NaCl aerosol particles with 0.3 μm reaches 99.98%, and the quality factor Q(F) 0.0968 Pa(−1). 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. MDPI 2022-11-20 /pmc/articles/PMC9697973/ /pubmed/36432372 http://dx.doi.org/10.3390/nano12224087 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhu, Ping
Sun, Wang
Liu, Yunchun
Improvement of Aerosol Filtering Performance of PLLA/PAN Composite Fiber with Gradient Structure
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 Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9697973/
https://www.ncbi.nlm.nih.gov/pubmed/36432372
http://dx.doi.org/10.3390/nano12224087
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