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Novel In-situ Precipitation Process to Engineer Low Permeability Porous Composite
Inspired by the natural precipitation of minerals in soil and rocks, a novel, simple and industrially scalable in-situ precipitation process to produce low permeability porous composites is presented. This process relies on capillary flow in wettable porous composites to absorb and store liquid. In...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6048042/ https://www.ncbi.nlm.nih.gov/pubmed/30013224 http://dx.doi.org/10.1038/s41598-018-28786-z |
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author | Varanasi, Swambabu Garusinghe, Uthpala Simon, George P Garnier, Gil Batchelor, Warren |
author_facet | Varanasi, Swambabu Garusinghe, Uthpala Simon, George P Garnier, Gil Batchelor, Warren |
author_sort | Varanasi, Swambabu |
collection | PubMed |
description | Inspired by the natural precipitation of minerals in soil and rocks, a novel, simple and industrially scalable in-situ precipitation process to produce low permeability porous composites is presented. This process relies on capillary flow in wettable porous composites to absorb and store liquid. In this process, a porous composite first absorbs a salt solution, after which the composite is dipped in a second salt solution. Salts are selected such as they react to form an insoluble precipitate. As big pores absorb more liquid than small pores, the precipitated particles are formed specifically for each pore. In this paper, precipitation of CaCO(3) nanoparticles in cellulose nanofibre (CNF) films was demonstrated as an example. Precipitation of 1 wt% of CaCO(3) nanoparticles in the CNF film reduced the pore volume by 50%, without changing the density. This reduced the water vapour and oxygen transmission rates by one order of magnitude to 4.7 g/m(2).day and 2.7 cc/m(2).day, respectively. The barrier properties of in-situ precipitated composites showed superior performance to previously reported CNF films in literature. The concept is general and of very high industrial interest as it can easily be retrofitted to current continuous industrial processes. |
format | Online Article Text |
id | pubmed-6048042 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-60480422018-07-19 Novel In-situ Precipitation Process to Engineer Low Permeability Porous Composite Varanasi, Swambabu Garusinghe, Uthpala Simon, George P Garnier, Gil Batchelor, Warren Sci Rep Article Inspired by the natural precipitation of minerals in soil and rocks, a novel, simple and industrially scalable in-situ precipitation process to produce low permeability porous composites is presented. This process relies on capillary flow in wettable porous composites to absorb and store liquid. In this process, a porous composite first absorbs a salt solution, after which the composite is dipped in a second salt solution. Salts are selected such as they react to form an insoluble precipitate. As big pores absorb more liquid than small pores, the precipitated particles are formed specifically for each pore. In this paper, precipitation of CaCO(3) nanoparticles in cellulose nanofibre (CNF) films was demonstrated as an example. Precipitation of 1 wt% of CaCO(3) nanoparticles in the CNF film reduced the pore volume by 50%, without changing the density. This reduced the water vapour and oxygen transmission rates by one order of magnitude to 4.7 g/m(2).day and 2.7 cc/m(2).day, respectively. The barrier properties of in-situ precipitated composites showed superior performance to previously reported CNF films in literature. The concept is general and of very high industrial interest as it can easily be retrofitted to current continuous industrial processes. Nature Publishing Group UK 2018-07-16 /pmc/articles/PMC6048042/ /pubmed/30013224 http://dx.doi.org/10.1038/s41598-018-28786-z Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Varanasi, Swambabu Garusinghe, Uthpala Simon, George P Garnier, Gil Batchelor, Warren Novel In-situ Precipitation Process to Engineer Low Permeability Porous Composite |
title | Novel In-situ Precipitation Process to Engineer Low Permeability Porous Composite |
title_full | Novel In-situ Precipitation Process to Engineer Low Permeability Porous Composite |
title_fullStr | Novel In-situ Precipitation Process to Engineer Low Permeability Porous Composite |
title_full_unstemmed | Novel In-situ Precipitation Process to Engineer Low Permeability Porous Composite |
title_short | Novel In-situ Precipitation Process to Engineer Low Permeability Porous Composite |
title_sort | novel in-situ precipitation process to engineer low permeability porous composite |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6048042/ https://www.ncbi.nlm.nih.gov/pubmed/30013224 http://dx.doi.org/10.1038/s41598-018-28786-z |
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