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Robust monolithic polymer(resorcinol-formaldehyde) reinforced alumina aerogel composites with mutually interpenetrating networks
Monolithic polymer(resorcinol-formaldehyde) reinforced alumina (RF/Al(2)O(3)) aerogel composites were prepared using a sol–gel method and supercritical fluid CO(2) drying. The formation mechanism, chemical compositions, pore structures, morphologies, thermal and mechanical performances of RF/Al(2)O(...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9067250/ https://www.ncbi.nlm.nih.gov/pubmed/35514471 http://dx.doi.org/10.1039/c9ra03227d |
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author | Zhong, Ya Shao, Gaofeng Wu, Xiaodong Kong, Yong Wang, Xue Cui, Sheng Shen, Xiaodong |
author_facet | Zhong, Ya Shao, Gaofeng Wu, Xiaodong Kong, Yong Wang, Xue Cui, Sheng Shen, Xiaodong |
author_sort | Zhong, Ya |
collection | PubMed |
description | Monolithic polymer(resorcinol-formaldehyde) reinforced alumina (RF/Al(2)O(3)) aerogel composites were prepared using a sol–gel method and supercritical fluid CO(2) drying. The formation mechanism, chemical compositions, pore structures, morphologies, thermal and mechanical performances of RF/Al(2)O(3) aerogel composites with different RF/Al molar ratios were investigated. The results show that the two networks of organic resorcinol-formaldehyde and inorganic alumina are completely independent of one another. The as-synthesized RF/Al(2)O(3) aerogels consist of spherical organic carbon particles and fibrous alumina, which possess low bulk density (0.077–0.112 g cm(−3)), low shrinkage (1.55–2.76%), low thermal conductivity (0.024–0.028 W m(−1) K(−1)), and high specific surface area (453.26–722.75 m(2) g(−1)). Especially, the sample prepared with molar ratio RF/Al = 1 shows the best network structure with the higher compressive strength (1.83 MPa) and Young's modulus (122.57 MPa). The resulting robust RF/Al(2)O(3) aerogel composites could be potentially used as thermal insulators, catalysts and adsorbents. |
format | Online Article Text |
id | pubmed-9067250 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90672502022-05-04 Robust monolithic polymer(resorcinol-formaldehyde) reinforced alumina aerogel composites with mutually interpenetrating networks Zhong, Ya Shao, Gaofeng Wu, Xiaodong Kong, Yong Wang, Xue Cui, Sheng Shen, Xiaodong RSC Adv Chemistry Monolithic polymer(resorcinol-formaldehyde) reinforced alumina (RF/Al(2)O(3)) aerogel composites were prepared using a sol–gel method and supercritical fluid CO(2) drying. The formation mechanism, chemical compositions, pore structures, morphologies, thermal and mechanical performances of RF/Al(2)O(3) aerogel composites with different RF/Al molar ratios were investigated. The results show that the two networks of organic resorcinol-formaldehyde and inorganic alumina are completely independent of one another. The as-synthesized RF/Al(2)O(3) aerogels consist of spherical organic carbon particles and fibrous alumina, which possess low bulk density (0.077–0.112 g cm(−3)), low shrinkage (1.55–2.76%), low thermal conductivity (0.024–0.028 W m(−1) K(−1)), and high specific surface area (453.26–722.75 m(2) g(−1)). Especially, the sample prepared with molar ratio RF/Al = 1 shows the best network structure with the higher compressive strength (1.83 MPa) and Young's modulus (122.57 MPa). The resulting robust RF/Al(2)O(3) aerogel composites could be potentially used as thermal insulators, catalysts and adsorbents. The Royal Society of Chemistry 2019-07-25 /pmc/articles/PMC9067250/ /pubmed/35514471 http://dx.doi.org/10.1039/c9ra03227d Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Chemistry Zhong, Ya Shao, Gaofeng Wu, Xiaodong Kong, Yong Wang, Xue Cui, Sheng Shen, Xiaodong Robust monolithic polymer(resorcinol-formaldehyde) reinforced alumina aerogel composites with mutually interpenetrating networks |
title | Robust monolithic polymer(resorcinol-formaldehyde) reinforced alumina aerogel composites with mutually interpenetrating networks |
title_full | Robust monolithic polymer(resorcinol-formaldehyde) reinforced alumina aerogel composites with mutually interpenetrating networks |
title_fullStr | Robust monolithic polymer(resorcinol-formaldehyde) reinforced alumina aerogel composites with mutually interpenetrating networks |
title_full_unstemmed | Robust monolithic polymer(resorcinol-formaldehyde) reinforced alumina aerogel composites with mutually interpenetrating networks |
title_short | Robust monolithic polymer(resorcinol-formaldehyde) reinforced alumina aerogel composites with mutually interpenetrating networks |
title_sort | robust monolithic polymer(resorcinol-formaldehyde) reinforced alumina aerogel composites with mutually interpenetrating networks |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9067250/ https://www.ncbi.nlm.nih.gov/pubmed/35514471 http://dx.doi.org/10.1039/c9ra03227d |
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