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Bio-Composites Consisting of Cellulose Nanofibers and Na(+) Montmorillonite Clay: Morphology and Performance Property
This paper reports the usage of cellulose nanofibers (CNFs) as a continuous nanoporous matrix and nanoclay (NC) as additive to fabricate hybrid films. CNF/Cloisite Na+ nanoclay composite films containing 10–50 wt % of NC were prepared for the study. The effects of NC incorporation and its content on...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7408525/ https://www.ncbi.nlm.nih.gov/pubmed/32605235 http://dx.doi.org/10.3390/polym12071448 |
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author | Huang, Runzhou Zhang, Xian Li, Huiyuan Zhou, Dingguo Wu, Qinglin |
author_facet | Huang, Runzhou Zhang, Xian Li, Huiyuan Zhou, Dingguo Wu, Qinglin |
author_sort | Huang, Runzhou |
collection | PubMed |
description | This paper reports the usage of cellulose nanofibers (CNFs) as a continuous nanoporous matrix and nanoclay (NC) as additive to fabricate hybrid films. CNF/Cloisite Na+ nanoclay composite films containing 10–50 wt % of NC were prepared for the study. The effects of NC incorporation and its content on mechanical, wettability and thermal degradation properties were investigated. The results showed that the film had a multilayer structure with gradually deposited CNT-NC hybrid on the filter paper Pure CNF films had higher moduli compared with those from the composite films, as the incorporation of NC decreased hydrogen bonding and networking ability of CNFs, especially at the high NC loading levels. The composite films demonstrated self-extinguishing ability when being exposed to the open flame. Composites with over 35 wt % NC did not burn because of the formation of a protective barrier containing ordered NC platelets. The addition of montmorillonite NC led to increased surface water contact angle, showing enhanced hydrophobicity of the material. During the film’s thermal pyrolysis, the first process occurred between 100 and 200 °C, resulting mainly from the evaporation of absorbed water; the second, between 280 and 350 °C, indicated thermal decomposition of cellulose; and the slow third stage happened from the 350 to 600 °C, representing carbonization. The results demonstrate that the apparent activation energies for all the CNF/NC composites were higher than the pure CNF film. CNF/NC films fabricated in this process are a promising barrier material for packaging applications. |
format | Online Article Text |
id | pubmed-7408525 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-74085252020-08-13 Bio-Composites Consisting of Cellulose Nanofibers and Na(+) Montmorillonite Clay: Morphology and Performance Property Huang, Runzhou Zhang, Xian Li, Huiyuan Zhou, Dingguo Wu, Qinglin Polymers (Basel) Article This paper reports the usage of cellulose nanofibers (CNFs) as a continuous nanoporous matrix and nanoclay (NC) as additive to fabricate hybrid films. CNF/Cloisite Na+ nanoclay composite films containing 10–50 wt % of NC were prepared for the study. The effects of NC incorporation and its content on mechanical, wettability and thermal degradation properties were investigated. The results showed that the film had a multilayer structure with gradually deposited CNT-NC hybrid on the filter paper Pure CNF films had higher moduli compared with those from the composite films, as the incorporation of NC decreased hydrogen bonding and networking ability of CNFs, especially at the high NC loading levels. The composite films demonstrated self-extinguishing ability when being exposed to the open flame. Composites with over 35 wt % NC did not burn because of the formation of a protective barrier containing ordered NC platelets. The addition of montmorillonite NC led to increased surface water contact angle, showing enhanced hydrophobicity of the material. During the film’s thermal pyrolysis, the first process occurred between 100 and 200 °C, resulting mainly from the evaporation of absorbed water; the second, between 280 and 350 °C, indicated thermal decomposition of cellulose; and the slow third stage happened from the 350 to 600 °C, representing carbonization. The results demonstrate that the apparent activation energies for all the CNF/NC composites were higher than the pure CNF film. CNF/NC films fabricated in this process are a promising barrier material for packaging applications. MDPI 2020-06-28 /pmc/articles/PMC7408525/ /pubmed/32605235 http://dx.doi.org/10.3390/polym12071448 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Huang, Runzhou Zhang, Xian Li, Huiyuan Zhou, Dingguo Wu, Qinglin Bio-Composites Consisting of Cellulose Nanofibers and Na(+) Montmorillonite Clay: Morphology and Performance Property |
title | Bio-Composites Consisting of Cellulose Nanofibers and Na(+) Montmorillonite Clay: Morphology and Performance Property |
title_full | Bio-Composites Consisting of Cellulose Nanofibers and Na(+) Montmorillonite Clay: Morphology and Performance Property |
title_fullStr | Bio-Composites Consisting of Cellulose Nanofibers and Na(+) Montmorillonite Clay: Morphology and Performance Property |
title_full_unstemmed | Bio-Composites Consisting of Cellulose Nanofibers and Na(+) Montmorillonite Clay: Morphology and Performance Property |
title_short | Bio-Composites Consisting of Cellulose Nanofibers and Na(+) Montmorillonite Clay: Morphology and Performance Property |
title_sort | bio-composites consisting of cellulose nanofibers and na(+) montmorillonite clay: morphology and performance property |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7408525/ https://www.ncbi.nlm.nih.gov/pubmed/32605235 http://dx.doi.org/10.3390/polym12071448 |
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