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Robust Silica-Bacterial Cellulose Composite Aerogel Fibers for Thermal Insulation Textile
Aerogels are nanoporous materials with excellent properties, especially super thermal insulation. However, owing to their serious high brittleness, the macroscopic forms of aerogels are not sufficiently rich for the application in some fields, such as thermal insulation clothing fabric. Recently, fr...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8482140/ https://www.ncbi.nlm.nih.gov/pubmed/34563031 http://dx.doi.org/10.3390/gels7030145 |
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author | Sai, Huazheng Wang, Meijuan Miao, Changqing Song, Qiqi Wang, Yutong Fu, Rui Wang, Yaxiong Ma, Litong Hao, Yan |
author_facet | Sai, Huazheng Wang, Meijuan Miao, Changqing Song, Qiqi Wang, Yutong Fu, Rui Wang, Yaxiong Ma, Litong Hao, Yan |
author_sort | Sai, Huazheng |
collection | PubMed |
description | Aerogels are nanoporous materials with excellent properties, especially super thermal insulation. However, owing to their serious high brittleness, the macroscopic forms of aerogels are not sufficiently rich for the application in some fields, such as thermal insulation clothing fabric. Recently, freeze spinning and wet spinning have been attempted for the synthesis of aerogel fibers. In this study, robust fibrous silica-bacterial cellulose (BC) composite aerogels with high performance were synthesized in a novel way. Silica sol was diffused into a fiber-like matrix, which was obtained by cutting the BC hydrogel and followed by secondary shaping to form a composite wet gel fiber with a nanoscale interpenetrating network structure. The tensile strength of the resulting aerogel fibers reached up to 5.4 MPa because the quantity of BC nanofibers in the unit volume of the matrix was improved significantly by the secondary shaping process. In addition, the composite aerogel fibers had a high specific area (up to 606.9 m(2)/g), low density (less than 0.164 g/cm(3)), and outstanding hydrophobicity. Most notably, they exhibited excellent thermal insulation performance in high-temperature (210 °C) or low-temperature (−72 °C) environments. Moreover, the thermal stability of CAFs (decomposition temperature was about 330 °C) was higher than that of natural polymer fiber. A novel method was proposed herein to prepare aerogel fibers with excellent performance to meet the requirements of wearable applications. |
format | Online Article Text |
id | pubmed-8482140 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-84821402021-10-01 Robust Silica-Bacterial Cellulose Composite Aerogel Fibers for Thermal Insulation Textile Sai, Huazheng Wang, Meijuan Miao, Changqing Song, Qiqi Wang, Yutong Fu, Rui Wang, Yaxiong Ma, Litong Hao, Yan Gels Article Aerogels are nanoporous materials with excellent properties, especially super thermal insulation. However, owing to their serious high brittleness, the macroscopic forms of aerogels are not sufficiently rich for the application in some fields, such as thermal insulation clothing fabric. Recently, freeze spinning and wet spinning have been attempted for the synthesis of aerogel fibers. In this study, robust fibrous silica-bacterial cellulose (BC) composite aerogels with high performance were synthesized in a novel way. Silica sol was diffused into a fiber-like matrix, which was obtained by cutting the BC hydrogel and followed by secondary shaping to form a composite wet gel fiber with a nanoscale interpenetrating network structure. The tensile strength of the resulting aerogel fibers reached up to 5.4 MPa because the quantity of BC nanofibers in the unit volume of the matrix was improved significantly by the secondary shaping process. In addition, the composite aerogel fibers had a high specific area (up to 606.9 m(2)/g), low density (less than 0.164 g/cm(3)), and outstanding hydrophobicity. Most notably, they exhibited excellent thermal insulation performance in high-temperature (210 °C) or low-temperature (−72 °C) environments. Moreover, the thermal stability of CAFs (decomposition temperature was about 330 °C) was higher than that of natural polymer fiber. A novel method was proposed herein to prepare aerogel fibers with excellent performance to meet the requirements of wearable applications. MDPI 2021-09-17 /pmc/articles/PMC8482140/ /pubmed/34563031 http://dx.doi.org/10.3390/gels7030145 Text en © 2021 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 Sai, Huazheng Wang, Meijuan Miao, Changqing Song, Qiqi Wang, Yutong Fu, Rui Wang, Yaxiong Ma, Litong Hao, Yan Robust Silica-Bacterial Cellulose Composite Aerogel Fibers for Thermal Insulation Textile |
title | Robust Silica-Bacterial Cellulose Composite Aerogel Fibers for Thermal Insulation Textile |
title_full | Robust Silica-Bacterial Cellulose Composite Aerogel Fibers for Thermal Insulation Textile |
title_fullStr | Robust Silica-Bacterial Cellulose Composite Aerogel Fibers for Thermal Insulation Textile |
title_full_unstemmed | Robust Silica-Bacterial Cellulose Composite Aerogel Fibers for Thermal Insulation Textile |
title_short | Robust Silica-Bacterial Cellulose Composite Aerogel Fibers for Thermal Insulation Textile |
title_sort | robust silica-bacterial cellulose composite aerogel fibers for thermal insulation textile |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8482140/ https://www.ncbi.nlm.nih.gov/pubmed/34563031 http://dx.doi.org/10.3390/gels7030145 |
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