Patterning of Nanocrystalline Cellulose Gel Phase by Electrodissolution of a Metallic Electrode

At high concentration or in the presence of electrolytes and organic solvents, solutions of cellulose nanocrystals (CNCs) can form gels exhibiting optical properties similar to the ones of liquid crystal phases. In an attempt to pattern such a gel phase, we have studied the electrodissolution of a m...

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Main Authors:	Daignan, Jean-Michel, Chen, Ran, Mahmoud, Khaled A., Ma, Yuan, Hill, Ian G., Kreplak, Laurent
Format:	Online
Language:	English
Published:	Public Library of Science 2014
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4045955/

id	pubmed-4045955
recordtype	oai_dc
spelling	pubmed-40459552014-06-09 Patterning of Nanocrystalline Cellulose Gel Phase by Electrodissolution of a Metallic Electrode Daignan, Jean-Michel Chen, Ran Mahmoud, Khaled A. Ma, Yuan Hill, Ian G. Kreplak, Laurent Research Article At high concentration or in the presence of electrolytes and organic solvents, solutions of cellulose nanocrystals (CNCs) can form gels exhibiting optical properties similar to the ones of liquid crystal phases. In an attempt to pattern such a gel phase, we have studied the electrodissolution of a metallic electrode in a water suspension of carboxylated CNCs (cCNCs). Depending on the metal used, the electrodissolution process was observed at a different positive potential. In the case of copper the minimum potential at which we could observe optically the growth of the gel phase was 200 mV. The growth rate was current limited indicating that the process was controlled by the electrodissolution of the copper electrode. This hypothesis was confirmed by using circular and square copper patterns as positive electrodes. In both cases, the consumption of the electrode material was observed optically and correlated with the growth of the gel phase. Public Library of Science 2014-06-04 /pmc/articles/PMC4045955/ /pubmed/24897116 http://dx.doi.org/10.1371/journal.pone.0099202 Text en © 2014 Daignan et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Daignan, Jean-Michel Chen, Ran Mahmoud, Khaled A. Ma, Yuan Hill, Ian G. Kreplak, Laurent
spellingShingle	Daignan, Jean-Michel Chen, Ran Mahmoud, Khaled A. Ma, Yuan Hill, Ian G. Kreplak, Laurent Patterning of Nanocrystalline Cellulose Gel Phase by Electrodissolution of a Metallic Electrode
author_facet	Daignan, Jean-Michel Chen, Ran Mahmoud, Khaled A. Ma, Yuan Hill, Ian G. Kreplak, Laurent
author_sort	Daignan, Jean-Michel
title	Patterning of Nanocrystalline Cellulose Gel Phase by Electrodissolution of a Metallic Electrode
title_short	Patterning of Nanocrystalline Cellulose Gel Phase by Electrodissolution of a Metallic Electrode
title_full	Patterning of Nanocrystalline Cellulose Gel Phase by Electrodissolution of a Metallic Electrode
title_fullStr	Patterning of Nanocrystalline Cellulose Gel Phase by Electrodissolution of a Metallic Electrode
title_full_unstemmed	Patterning of Nanocrystalline Cellulose Gel Phase by Electrodissolution of a Metallic Electrode
title_sort	patterning of nanocrystalline cellulose gel phase by electrodissolution of a metallic electrode
description	At high concentration or in the presence of electrolytes and organic solvents, solutions of cellulose nanocrystals (CNCs) can form gels exhibiting optical properties similar to the ones of liquid crystal phases. In an attempt to pattern such a gel phase, we have studied the electrodissolution of a metallic electrode in a water suspension of carboxylated CNCs (cCNCs). Depending on the metal used, the electrodissolution process was observed at a different positive potential. In the case of copper the minimum potential at which we could observe optically the growth of the gel phase was 200 mV. The growth rate was current limited indicating that the process was controlled by the electrodissolution of the copper electrode. This hypothesis was confirmed by using circular and square copper patterns as positive electrodes. In both cases, the consumption of the electrode material was observed optically and correlated with the growth of the gel phase.
publisher	Public Library of Science
publishDate	2014
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4045955/
_version_	1612097142279634944

Patterning of Nanocrystalline Cellulose Gel Phase by Electrodissolution of a Metallic Electrode

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