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Fabrication and Characterization of Cellulose Nanofiber Aerogels Prepared via Two Different Drying Techniques

Studies on the influence of drying processes on cellulose nanofiber (CNF) aerogel performance has always been a great challenge. In this study, CNF aerogels were prepared via two different drying techniques. The CNF solution was prepared via existing chemical methods, and the resultant aerogel was f...

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Autores principales: Wang, Zhe, Zhu, Wenkai, Huang, Runzhou, Zhang, Yang, Jia, Chong, Zhao, Hua, Chen, Wei, Xue, Yuanyuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7692565/
https://www.ncbi.nlm.nih.gov/pubmed/33153103
http://dx.doi.org/10.3390/polym12112583
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author Wang, Zhe
Zhu, Wenkai
Huang, Runzhou
Zhang, Yang
Jia, Chong
Zhao, Hua
Chen, Wei
Xue, Yuanyuan
author_facet Wang, Zhe
Zhu, Wenkai
Huang, Runzhou
Zhang, Yang
Jia, Chong
Zhao, Hua
Chen, Wei
Xue, Yuanyuan
author_sort Wang, Zhe
collection PubMed
description Studies on the influence of drying processes on cellulose nanofiber (CNF) aerogel performance has always been a great challenge. In this study, CNF aerogels were prepared via two different drying techniques. The CNF solution was prepared via existing chemical methods, and the resultant aerogel was fabricated through supercritical CO(2) drying and liquid nitrogen freeze-drying techniques. The microstructure, shrinkage, specific surface area, pore volume, density, compression strength, and isothermal desorption curves of CNF aerogel were characterized. The aerogel obtained from the liquid nitrogen freeze-drying method showed a relatively higher shrinkage, higher compression strength, lower specific surface area, higher pore volume, and higher density. The N(2) adsorption capacity and pore diameter of the aerogel obtained via the liquid nitrogen freeze-drying method were lower than the aerogel that underwent supercritical CO(2) drying. However, the structures of CNF aerogels obtained from these two drying methods were extremely similar.
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spelling pubmed-76925652020-11-28 Fabrication and Characterization of Cellulose Nanofiber Aerogels Prepared via Two Different Drying Techniques Wang, Zhe Zhu, Wenkai Huang, Runzhou Zhang, Yang Jia, Chong Zhao, Hua Chen, Wei Xue, Yuanyuan Polymers (Basel) Article Studies on the influence of drying processes on cellulose nanofiber (CNF) aerogel performance has always been a great challenge. In this study, CNF aerogels were prepared via two different drying techniques. The CNF solution was prepared via existing chemical methods, and the resultant aerogel was fabricated through supercritical CO(2) drying and liquid nitrogen freeze-drying techniques. The microstructure, shrinkage, specific surface area, pore volume, density, compression strength, and isothermal desorption curves of CNF aerogel were characterized. The aerogel obtained from the liquid nitrogen freeze-drying method showed a relatively higher shrinkage, higher compression strength, lower specific surface area, higher pore volume, and higher density. The N(2) adsorption capacity and pore diameter of the aerogel obtained via the liquid nitrogen freeze-drying method were lower than the aerogel that underwent supercritical CO(2) drying. However, the structures of CNF aerogels obtained from these two drying methods were extremely similar. MDPI 2020-11-03 /pmc/articles/PMC7692565/ /pubmed/33153103 http://dx.doi.org/10.3390/polym12112583 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
Wang, Zhe
Zhu, Wenkai
Huang, Runzhou
Zhang, Yang
Jia, Chong
Zhao, Hua
Chen, Wei
Xue, Yuanyuan
Fabrication and Characterization of Cellulose Nanofiber Aerogels Prepared via Two Different Drying Techniques
title Fabrication and Characterization of Cellulose Nanofiber Aerogels Prepared via Two Different Drying Techniques
title_full Fabrication and Characterization of Cellulose Nanofiber Aerogels Prepared via Two Different Drying Techniques
title_fullStr Fabrication and Characterization of Cellulose Nanofiber Aerogels Prepared via Two Different Drying Techniques
title_full_unstemmed Fabrication and Characterization of Cellulose Nanofiber Aerogels Prepared via Two Different Drying Techniques
title_short Fabrication and Characterization of Cellulose Nanofiber Aerogels Prepared via Two Different Drying Techniques
title_sort fabrication and characterization of cellulose nanofiber aerogels prepared via two different drying techniques
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7692565/
https://www.ncbi.nlm.nih.gov/pubmed/33153103
http://dx.doi.org/10.3390/polym12112583
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