Cargando…
Preparation of PI/PTFE–PAI Composite Nanofiber Aerogels with Hierarchical Structure and High-Filtration Efficiency
Electrospun nanofiber, showing large specific area and high porosity, has attracted much attention across various fields, especially in the field of air filtration. The small diameter contributes to the construction of filters with high-filtration efficiency for fine particulate matter (PM), however...
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7558468/ https://www.ncbi.nlm.nih.gov/pubmed/32927775 http://dx.doi.org/10.3390/nano10091806 |
_version_ | 1783594644771176448 |
---|---|
author | Li, Dawei Liu, Huizhong Shen, Ying Wu, Huiping Liu, Feng Wang, Lanlan Liu, Qingsheng Deng, Bingyao |
author_facet | Li, Dawei Liu, Huizhong Shen, Ying Wu, Huiping Liu, Feng Wang, Lanlan Liu, Qingsheng Deng, Bingyao |
author_sort | Li, Dawei |
collection | PubMed |
description | Electrospun nanofiber, showing large specific area and high porosity, has attracted much attention across various fields, especially in the field of air filtration. The small diameter contributes to the construction of filters with high-filtration efficiency for fine particulate matter (PM), however, along with an increase in air resistance. Herein, composited nanofiber aerogels (NAs), a truly three-dimensional (3D) derivative of the densely compacted electrospun mat, were constructed with the blocks of polytetrafluoroethylene–polyamideimide (PTFE–PAI) composite nanofiber and polyimide (PI) nanofiber. PI/PTFE–PAI NAs with hierarchically porous architecture and excellent mechanical properties have been obtained by thermally induced crosslink bonding. Results indicated that sintering at 400 °C for 30 min could complete the decomposition of polyethylene (PEO) and imidization of polyamic acid (PAA) into PI, as well as generate sufficient mechanical bonding between adjacent nanofibers in the NAs without extra additive. The well-prepared PI/PTFE–PAI NAs could withstand high temperature up to 500 °C. In addition, the filtration tests illustrated that the composite NAs had an excellent performance in PM filtration. More importantly, the filtration behavior could be adjusted to meet the requirements of various applications. The excellent thermal stability and high-filtration efficiency indicated its great potential in the field of high-temperature air filtration. |
format | Online Article Text |
id | pubmed-7558468 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-75584682020-10-26 Preparation of PI/PTFE–PAI Composite Nanofiber Aerogels with Hierarchical Structure and High-Filtration Efficiency Li, Dawei Liu, Huizhong Shen, Ying Wu, Huiping Liu, Feng Wang, Lanlan Liu, Qingsheng Deng, Bingyao Nanomaterials (Basel) Article Electrospun nanofiber, showing large specific area and high porosity, has attracted much attention across various fields, especially in the field of air filtration. The small diameter contributes to the construction of filters with high-filtration efficiency for fine particulate matter (PM), however, along with an increase in air resistance. Herein, composited nanofiber aerogels (NAs), a truly three-dimensional (3D) derivative of the densely compacted electrospun mat, were constructed with the blocks of polytetrafluoroethylene–polyamideimide (PTFE–PAI) composite nanofiber and polyimide (PI) nanofiber. PI/PTFE–PAI NAs with hierarchically porous architecture and excellent mechanical properties have been obtained by thermally induced crosslink bonding. Results indicated that sintering at 400 °C for 30 min could complete the decomposition of polyethylene (PEO) and imidization of polyamic acid (PAA) into PI, as well as generate sufficient mechanical bonding between adjacent nanofibers in the NAs without extra additive. The well-prepared PI/PTFE–PAI NAs could withstand high temperature up to 500 °C. In addition, the filtration tests illustrated that the composite NAs had an excellent performance in PM filtration. More importantly, the filtration behavior could be adjusted to meet the requirements of various applications. The excellent thermal stability and high-filtration efficiency indicated its great potential in the field of high-temperature air filtration. MDPI 2020-09-10 /pmc/articles/PMC7558468/ /pubmed/32927775 http://dx.doi.org/10.3390/nano10091806 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Li, Dawei Liu, Huizhong Shen, Ying Wu, Huiping Liu, Feng Wang, Lanlan Liu, Qingsheng Deng, Bingyao Preparation of PI/PTFE–PAI Composite Nanofiber Aerogels with Hierarchical Structure and High-Filtration Efficiency |
title | Preparation of PI/PTFE–PAI Composite Nanofiber Aerogels with Hierarchical Structure and High-Filtration Efficiency |
title_full | Preparation of PI/PTFE–PAI Composite Nanofiber Aerogels with Hierarchical Structure and High-Filtration Efficiency |
title_fullStr | Preparation of PI/PTFE–PAI Composite Nanofiber Aerogels with Hierarchical Structure and High-Filtration Efficiency |
title_full_unstemmed | Preparation of PI/PTFE–PAI Composite Nanofiber Aerogels with Hierarchical Structure and High-Filtration Efficiency |
title_short | Preparation of PI/PTFE–PAI Composite Nanofiber Aerogels with Hierarchical Structure and High-Filtration Efficiency |
title_sort | preparation of pi/ptfe–pai composite nanofiber aerogels with hierarchical structure and high-filtration efficiency |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7558468/ https://www.ncbi.nlm.nih.gov/pubmed/32927775 http://dx.doi.org/10.3390/nano10091806 |
work_keys_str_mv | AT lidawei preparationofpiptfepaicompositenanofiberaerogelswithhierarchicalstructureandhighfiltrationefficiency AT liuhuizhong preparationofpiptfepaicompositenanofiberaerogelswithhierarchicalstructureandhighfiltrationefficiency AT shenying preparationofpiptfepaicompositenanofiberaerogelswithhierarchicalstructureandhighfiltrationefficiency AT wuhuiping preparationofpiptfepaicompositenanofiberaerogelswithhierarchicalstructureandhighfiltrationefficiency AT liufeng preparationofpiptfepaicompositenanofiberaerogelswithhierarchicalstructureandhighfiltrationefficiency AT wanglanlan preparationofpiptfepaicompositenanofiberaerogelswithhierarchicalstructureandhighfiltrationefficiency AT liuqingsheng preparationofpiptfepaicompositenanofiberaerogelswithhierarchicalstructureandhighfiltrationefficiency AT dengbingyao preparationofpiptfepaicompositenanofiberaerogelswithhierarchicalstructureandhighfiltrationefficiency |