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Rheological modification of partially oxidised cellulose nanofibril gels with inorganic clays

Bryant, Saffron J. ; Calabrese, Vincenzo ; Silva, Marcelo A. da ; Hossain, Kazi M. Zakir ; Scott, Janet L. and Edler, Karen J. LU orcid (2021) In PLoS ONE 16(7).
Abstract

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... (More)

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.

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author
; ; ; ; and
publishing date
type
Contribution to journal
publication status
published
in
PLoS ONE
volume
16
issue
7
article number
e0252660
pages
14 pages
publisher
Public Library of Science (PLoS)
external identifiers
  • scopus:85109576230
  • pmid:34234363
ISSN
1932-6203
DOI
10.1371/journal.pone.0252660
language
English
LU publication?
no
additional info
Publisher Copyright: Copyright © 2021 Bryant et al.
id
a11abfea-b173-48f3-b5d3-4f0e0d8587d4
date added to LUP
2022-07-12 15:37:15
date last changed
2024-04-30 09:48:17
@article{a11abfea-b173-48f3-b5d3-4f0e0d8587d4,
  abstract     = {{<p>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. </p>}},
  author       = {{Bryant, Saffron J. and Calabrese, Vincenzo and Silva, Marcelo A. da and Hossain, Kazi M. Zakir and Scott, Janet L. and Edler, Karen J.}},
  issn         = {{1932-6203}},
  language     = {{eng}},
  number       = {{7}},
  publisher    = {{Public Library of Science (PLoS)}},
  series       = {{PLoS ONE}},
  title        = {{Rheological modification of partially oxidised cellulose nanofibril gels with inorganic clays}},
  url          = {{http://dx.doi.org/10.1371/journal.pone.0252660}},
  doi          = {{10.1371/journal.pone.0252660}},
  volume       = {{16}},
  year         = {{2021}},
}