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...

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Autores principales:	Saffron J Bryant, Vincenzo Calabrese, Marcelo A da Silva, Kazi M Zakir Hossain, Janet L Scott, Karen J Edler
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3078d660d8f6459382468eea8aca6d8e
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spelling	oai:doaj.org-article:3078d660d8f6459382468eea8aca6d8e2021-12-02T20:05:10ZRheological modification of partially oxidised cellulose nanofibril gels with inorganic clays.1932-620310.1371/journal.pone.0252660https://doaj.org/article/3078d660d8f6459382468eea8aca6d8e2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0252660https://doaj.org/toc/1932-6203This 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.Saffron J BryantVincenzo CalabreseMarcelo A da SilvaKazi M Zakir HossainJanet L ScottKaren J EdlerPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 7, p e0252660 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Saffron J Bryant Vincenzo Calabrese Marcelo A da Silva Kazi M Zakir Hossain Janet L Scott Karen J Edler Rheological modification of partially oxidised cellulose nanofibril gels with inorganic clays.
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	article
author	Saffron J Bryant Vincenzo Calabrese Marcelo A da Silva Kazi M Zakir Hossain Janet L Scott Karen J Edler
author_facet	Saffron J Bryant Vincenzo Calabrese Marcelo A da Silva Kazi M Zakir Hossain Janet L Scott Karen J Edler
author_sort	Saffron J Bryant
title	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_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_sort	rheological modification of partially oxidised cellulose nanofibril gels with inorganic clays.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/3078d660d8f6459382468eea8aca6d8e
work_keys_str_mv	AT saffronjbryant rheologicalmodificationofpartiallyoxidisedcellulosenanofibrilgelswithinorganicclays AT vincenzocalabrese rheologicalmodificationofpartiallyoxidisedcellulosenanofibrilgelswithinorganicclays AT marceloadasilva rheologicalmodificationofpartiallyoxidisedcellulosenanofibrilgelswithinorganicclays AT kazimzakirhossain rheologicalmodificationofpartiallyoxidisedcellulosenanofibrilgelswithinorganicclays AT janetlscott rheologicalmodificationofpartiallyoxidisedcellulosenanofibrilgelswithinorganicclays AT karenjedler rheologicalmodificationofpartiallyoxidisedcellulosenanofibrilgelswithinorganicclays
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Rheological modification of partially oxidised cellulose nanofibril gels with inorganic clays.

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