Cargando…
Hybrid Gibbsite Nanoplatelet/Cellulose Nanocrystal Multilayered Coatings for Oxygen Barrier Improvement
We have investigated the ability of multilayered hybrid thin films of cellulose nanocrystals (CNCs) and gibbsite nanoplatelets (GNPs) to be built by the layer-by-layer (LbL) technique onto substrates selected for packaging applications, and to improve the oxygen barrier properties. Using complementa...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6650769/ https://www.ncbi.nlm.nih.gov/pubmed/31380351 http://dx.doi.org/10.3389/fchem.2019.00507 |
_version_ | 1783438192868851712 |
---|---|
author | Chemin, Maud Heux, Laurent Guérin, David Crowther-Alwyn, Laura Jean, Bruno |
author_facet | Chemin, Maud Heux, Laurent Guérin, David Crowther-Alwyn, Laura Jean, Bruno |
author_sort | Chemin, Maud |
collection | PubMed |
description | We have investigated the ability of multilayered hybrid thin films of cellulose nanocrystals (CNCs) and gibbsite nanoplatelets (GNPs) to be built by the layer-by-layer (LbL) technique onto substrates selected for packaging applications, and to improve the oxygen barrier properties. Using complementary structural characterization techniques, namely atomic force microscopy, ellipsometry, and spectral reflectance, we show that when deposited onto model silicon substrates these hybrid films were homogenous and of reduced porosity, and were comprised of alternately deposited monolayers of GNPs and CNCs. The successful deposition of such homogeneous and dense hybrid thin films onto various types of flexible substrates showing different chemical compositions, hydrophilicity, and surface morphology, ranging from cardboard to smart paper, polyethylene (PE) films, and PE-coated cardboard was also confirmed by scanning electron microscopy observations. In view of the diversity of these substrates we could confirm the remarkable robustness of such a deposition process, likely due to (i) the adaptability of the LbL assembling technique and (ii) the strong electrostatic and hydrogen bonding interactions between GNPs and CNCs. The measurement of the oxygen transmission rate (OTR) at 23°C and 50% RH showed that the oxygen barrier properties of the bare substrates could be significantly improved (e.g., 75% decrease of the OTR) after the deposition of such thin (<100 nm) multilayered hybrid films. This lowered permeability was tentatively attributed to the highly tortuous morphology of the coating, acting to impede the gas diffusion. These partially biosourced very thin films stand as good candidates for using as coatings showing high oxygen barrier performance. |
format | Online Article Text |
id | pubmed-6650769 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-66507692019-08-02 Hybrid Gibbsite Nanoplatelet/Cellulose Nanocrystal Multilayered Coatings for Oxygen Barrier Improvement Chemin, Maud Heux, Laurent Guérin, David Crowther-Alwyn, Laura Jean, Bruno Front Chem Chemistry We have investigated the ability of multilayered hybrid thin films of cellulose nanocrystals (CNCs) and gibbsite nanoplatelets (GNPs) to be built by the layer-by-layer (LbL) technique onto substrates selected for packaging applications, and to improve the oxygen barrier properties. Using complementary structural characterization techniques, namely atomic force microscopy, ellipsometry, and spectral reflectance, we show that when deposited onto model silicon substrates these hybrid films were homogenous and of reduced porosity, and were comprised of alternately deposited monolayers of GNPs and CNCs. The successful deposition of such homogeneous and dense hybrid thin films onto various types of flexible substrates showing different chemical compositions, hydrophilicity, and surface morphology, ranging from cardboard to smart paper, polyethylene (PE) films, and PE-coated cardboard was also confirmed by scanning electron microscopy observations. In view of the diversity of these substrates we could confirm the remarkable robustness of such a deposition process, likely due to (i) the adaptability of the LbL assembling technique and (ii) the strong electrostatic and hydrogen bonding interactions between GNPs and CNCs. The measurement of the oxygen transmission rate (OTR) at 23°C and 50% RH showed that the oxygen barrier properties of the bare substrates could be significantly improved (e.g., 75% decrease of the OTR) after the deposition of such thin (<100 nm) multilayered hybrid films. This lowered permeability was tentatively attributed to the highly tortuous morphology of the coating, acting to impede the gas diffusion. These partially biosourced very thin films stand as good candidates for using as coatings showing high oxygen barrier performance. Frontiers Media S.A. 2019-07-17 /pmc/articles/PMC6650769/ /pubmed/31380351 http://dx.doi.org/10.3389/fchem.2019.00507 Text en Copyright © 2019 Chemin, Heux, Guérin, Crowther-Alwyn and Jean. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Chemistry Chemin, Maud Heux, Laurent Guérin, David Crowther-Alwyn, Laura Jean, Bruno Hybrid Gibbsite Nanoplatelet/Cellulose Nanocrystal Multilayered Coatings for Oxygen Barrier Improvement |
title | Hybrid Gibbsite Nanoplatelet/Cellulose Nanocrystal Multilayered Coatings for Oxygen Barrier Improvement |
title_full | Hybrid Gibbsite Nanoplatelet/Cellulose Nanocrystal Multilayered Coatings for Oxygen Barrier Improvement |
title_fullStr | Hybrid Gibbsite Nanoplatelet/Cellulose Nanocrystal Multilayered Coatings for Oxygen Barrier Improvement |
title_full_unstemmed | Hybrid Gibbsite Nanoplatelet/Cellulose Nanocrystal Multilayered Coatings for Oxygen Barrier Improvement |
title_short | Hybrid Gibbsite Nanoplatelet/Cellulose Nanocrystal Multilayered Coatings for Oxygen Barrier Improvement |
title_sort | hybrid gibbsite nanoplatelet/cellulose nanocrystal multilayered coatings for oxygen barrier improvement |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6650769/ https://www.ncbi.nlm.nih.gov/pubmed/31380351 http://dx.doi.org/10.3389/fchem.2019.00507 |
work_keys_str_mv | AT cheminmaud hybridgibbsitenanoplateletcellulosenanocrystalmultilayeredcoatingsforoxygenbarrierimprovement AT heuxlaurent hybridgibbsitenanoplateletcellulosenanocrystalmultilayeredcoatingsforoxygenbarrierimprovement AT guerindavid hybridgibbsitenanoplateletcellulosenanocrystalmultilayeredcoatingsforoxygenbarrierimprovement AT crowtheralwynlaura hybridgibbsitenanoplateletcellulosenanocrystalmultilayeredcoatingsforoxygenbarrierimprovement AT jeanbruno hybridgibbsitenanoplateletcellulosenanocrystalmultilayeredcoatingsforoxygenbarrierimprovement |