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The Effect of High Lignin Content on Oxidative Nanofibrillation of Wood Cell Wall
Wood from field-grown poplars with different genotypes and varying lignin content (17.4 wt % to 30.0 wt %) were subjected to one-pot 2,2,6,6-Tetramethylpiperidin-1-yl)oxyl catalyzed oxidation and high-pressure homogenization in order to investigate nanofibrillation following simultaneous delignifica...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8146676/ https://www.ncbi.nlm.nih.gov/pubmed/33947163 http://dx.doi.org/10.3390/nano11051179 |
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author | Jonasson, Simon Bünder, Anne Berglund, Linn Hertzberg, Magnus Niittylä, Totte Oksman, Kristiina |
author_facet | Jonasson, Simon Bünder, Anne Berglund, Linn Hertzberg, Magnus Niittylä, Totte Oksman, Kristiina |
author_sort | Jonasson, Simon |
collection | PubMed |
description | Wood from field-grown poplars with different genotypes and varying lignin content (17.4 wt % to 30.0 wt %) were subjected to one-pot 2,2,6,6-Tetramethylpiperidin-1-yl)oxyl catalyzed oxidation and high-pressure homogenization in order to investigate nanofibrillation following simultaneous delignification and cellulose oxidation. When comparing low and high lignin wood it was found that the high lignin wood was more easily fibrillated as indicated by a higher nanofibril yield (68% and 45%) and suspension viscosity (27 and 15 mPa·s). The nanofibrils were monodisperse with diameter ranging between 1.2 and 2.0 nm as measured using atomic force microscopy. Slightly less cellulose oxidation (0.44 and 0.68 mmol·g(−1)) together with a reduced process yield (36% and 44%) was also found which showed that the removal of a larger amount of lignin increased the efficiency of the homogenization step despite slightly reduced oxidation of the nanofibril surfaces. The surface area of oxidized high lignin wood was also higher than low lignin wood (114 m(2)·g(−1) and 76 m(2)·g(−1)) which implicates porosity as a factor that can influence cellulose nanofibril isolation from wood in a beneficial manner. |
format | Online Article Text |
id | pubmed-8146676 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-81466762021-05-26 The Effect of High Lignin Content on Oxidative Nanofibrillation of Wood Cell Wall Jonasson, Simon Bünder, Anne Berglund, Linn Hertzberg, Magnus Niittylä, Totte Oksman, Kristiina Nanomaterials (Basel) Article Wood from field-grown poplars with different genotypes and varying lignin content (17.4 wt % to 30.0 wt %) were subjected to one-pot 2,2,6,6-Tetramethylpiperidin-1-yl)oxyl catalyzed oxidation and high-pressure homogenization in order to investigate nanofibrillation following simultaneous delignification and cellulose oxidation. When comparing low and high lignin wood it was found that the high lignin wood was more easily fibrillated as indicated by a higher nanofibril yield (68% and 45%) and suspension viscosity (27 and 15 mPa·s). The nanofibrils were monodisperse with diameter ranging between 1.2 and 2.0 nm as measured using atomic force microscopy. Slightly less cellulose oxidation (0.44 and 0.68 mmol·g(−1)) together with a reduced process yield (36% and 44%) was also found which showed that the removal of a larger amount of lignin increased the efficiency of the homogenization step despite slightly reduced oxidation of the nanofibril surfaces. The surface area of oxidized high lignin wood was also higher than low lignin wood (114 m(2)·g(−1) and 76 m(2)·g(−1)) which implicates porosity as a factor that can influence cellulose nanofibril isolation from wood in a beneficial manner. MDPI 2021-04-29 /pmc/articles/PMC8146676/ /pubmed/33947163 http://dx.doi.org/10.3390/nano11051179 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Jonasson, Simon Bünder, Anne Berglund, Linn Hertzberg, Magnus Niittylä, Totte Oksman, Kristiina The Effect of High Lignin Content on Oxidative Nanofibrillation of Wood Cell Wall |
title | The Effect of High Lignin Content on Oxidative Nanofibrillation of Wood Cell Wall |
title_full | The Effect of High Lignin Content on Oxidative Nanofibrillation of Wood Cell Wall |
title_fullStr | The Effect of High Lignin Content on Oxidative Nanofibrillation of Wood Cell Wall |
title_full_unstemmed | The Effect of High Lignin Content on Oxidative Nanofibrillation of Wood Cell Wall |
title_short | The Effect of High Lignin Content on Oxidative Nanofibrillation of Wood Cell Wall |
title_sort | effect of high lignin content on oxidative nanofibrillation of wood cell wall |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8146676/ https://www.ncbi.nlm.nih.gov/pubmed/33947163 http://dx.doi.org/10.3390/nano11051179 |
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