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Rheological modification of partially oxidised cellulose nanofibril gels with inorganic clays
This study aimed to quantify the influence of clays and partially oxidised cellulose nanofibrils (OCNF) on gelation as well as characterise their physical and chemical interactions. Mixtures of Laponite and montmorillonite clays with OCNF form shear-thinning gels that are more viscous across the ent...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8263268/ https://www.ncbi.nlm.nih.gov/pubmed/34234363 http://dx.doi.org/10.1371/journal.pone.0252660 |
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author | Bryant, Saffron J. Calabrese, Vincenzo da Silva, Marcelo A. Zakir Hossain, Kazi M. Scott, Janet L. Edler, Karen J. |
author_facet | Bryant, Saffron J. Calabrese, Vincenzo da Silva, Marcelo A. Zakir Hossain, Kazi M. Scott, Janet L. Edler, Karen J. |
author_sort | Bryant, Saffron J. |
collection | PubMed |
description | This study aimed to quantify the influence of clays and partially oxidised cellulose nanofibrils (OCNF) on gelation as well as characterise their physical and chemical interactions. Mixtures of Laponite and montmorillonite clays with OCNF form shear-thinning gels that are more viscous across the entire shear range than OCNF on its own. Viscosity and other rheological properties can be fine-tuned using different types of clay at different concentrations (0.5–2 wt%). Laponite particles are an order of magnitude smaller than those of montmorillonite (radii of 150 Å compared to 2000 Å) and are therefore able to facilitate networking of the cellulose fibrils, resulting in stronger effects on rheological properties including greater viscosity. This work presents a mechanism for modifying rheological properties using renewable and environmentally-friendly nanocellulose and clays which could be used in a variety of industrial products including home and personal care formulations. |
format | Online Article Text |
id | pubmed-8263268 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-82632682021-07-19 Rheological modification of partially oxidised cellulose nanofibril gels with inorganic clays Bryant, Saffron J. Calabrese, Vincenzo da Silva, Marcelo A. Zakir Hossain, Kazi M. Scott, Janet L. Edler, Karen J. PLoS One Research Article This study aimed to quantify the influence of clays and partially oxidised cellulose nanofibrils (OCNF) on gelation as well as characterise their physical and chemical interactions. Mixtures of Laponite and montmorillonite clays with OCNF form shear-thinning gels that are more viscous across the entire shear range than OCNF on its own. Viscosity and other rheological properties can be fine-tuned using different types of clay at different concentrations (0.5–2 wt%). Laponite particles are an order of magnitude smaller than those of montmorillonite (radii of 150 Å compared to 2000 Å) and are therefore able to facilitate networking of the cellulose fibrils, resulting in stronger effects on rheological properties including greater viscosity. This work presents a mechanism for modifying rheological properties using renewable and environmentally-friendly nanocellulose and clays which could be used in a variety of industrial products including home and personal care formulations. Public Library of Science 2021-07-07 /pmc/articles/PMC8263268/ /pubmed/34234363 http://dx.doi.org/10.1371/journal.pone.0252660 Text en © 2021 Bryant et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Bryant, Saffron J. Calabrese, Vincenzo da Silva, Marcelo A. Zakir Hossain, Kazi M. Scott, Janet L. Edler, Karen J. Rheological modification of partially oxidised cellulose nanofibril gels with inorganic clays |
title | Rheological modification of partially oxidised cellulose nanofibril gels with inorganic clays |
title_full | Rheological modification of partially oxidised cellulose nanofibril gels with inorganic clays |
title_fullStr | Rheological modification of partially oxidised cellulose nanofibril gels with inorganic clays |
title_full_unstemmed | Rheological modification of partially oxidised cellulose nanofibril gels with inorganic clays |
title_short | Rheological modification of partially oxidised cellulose nanofibril gels with inorganic clays |
title_sort | rheological modification of partially oxidised cellulose nanofibril gels with inorganic clays |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8263268/ https://www.ncbi.nlm.nih.gov/pubmed/34234363 http://dx.doi.org/10.1371/journal.pone.0252660 |
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