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TEMPO-Oxidized Cellulose with High Degree of Oxidation

In this paper, water-soluble 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose with a high degree of oxidation was prepared by a two-step process using bamboo dissolving pulp. The first step was to destroy the cellulose crystal I by NaOH/urea solution to obtain cellulose powder with de...

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Detalles Bibliográficos
Autores principales: Tang, Zuwu, Li, Wenyan, Lin, Xinxing, Xiao, He, Miao, Qingxian, Huang, Liulian, Chen, Lihui, Wu, Hui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6418784/
https://www.ncbi.nlm.nih.gov/pubmed/30965725
http://dx.doi.org/10.3390/polym9090421
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author Tang, Zuwu
Li, Wenyan
Lin, Xinxing
Xiao, He
Miao, Qingxian
Huang, Liulian
Chen, Lihui
Wu, Hui
author_facet Tang, Zuwu
Li, Wenyan
Lin, Xinxing
Xiao, He
Miao, Qingxian
Huang, Liulian
Chen, Lihui
Wu, Hui
author_sort Tang, Zuwu
collection PubMed
description In this paper, water-soluble 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose with a high degree of oxidation was prepared by a two-step process using bamboo dissolving pulp. The first step was to destroy the cellulose crystal I by NaOH/urea solution to obtain cellulose powder with decreased crystallinity. The second step was to oxidize the cellulose powder by TEMPO oxidation. The TEMPO-oxidized cellulose was analyzed by Fourier transform infrared spectroscopy (FTIR), conductimetry, X-ray diffraction (XRD), fiber analyzer, and transmission electron microscopy (TEM). FTIR showed that the hydroxymethyl groups in cellulose chains were converted into carboxyl groups. The degree of oxidation measured by conductimetry titration was as high as 91.0%. The TEMPO-oxidized cellulose was soluble in water for valuable polyelectrolytes and intermediates.
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spelling pubmed-64187842019-04-02 TEMPO-Oxidized Cellulose with High Degree of Oxidation Tang, Zuwu Li, Wenyan Lin, Xinxing Xiao, He Miao, Qingxian Huang, Liulian Chen, Lihui Wu, Hui Polymers (Basel) Article In this paper, water-soluble 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose with a high degree of oxidation was prepared by a two-step process using bamboo dissolving pulp. The first step was to destroy the cellulose crystal I by NaOH/urea solution to obtain cellulose powder with decreased crystallinity. The second step was to oxidize the cellulose powder by TEMPO oxidation. The TEMPO-oxidized cellulose was analyzed by Fourier transform infrared spectroscopy (FTIR), conductimetry, X-ray diffraction (XRD), fiber analyzer, and transmission electron microscopy (TEM). FTIR showed that the hydroxymethyl groups in cellulose chains were converted into carboxyl groups. The degree of oxidation measured by conductimetry titration was as high as 91.0%. The TEMPO-oxidized cellulose was soluble in water for valuable polyelectrolytes and intermediates. MDPI 2017-09-06 /pmc/articles/PMC6418784/ /pubmed/30965725 http://dx.doi.org/10.3390/polym9090421 Text en © 2017 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
Tang, Zuwu
Li, Wenyan
Lin, Xinxing
Xiao, He
Miao, Qingxian
Huang, Liulian
Chen, Lihui
Wu, Hui
TEMPO-Oxidized Cellulose with High Degree of Oxidation
title TEMPO-Oxidized Cellulose with High Degree of Oxidation
title_full TEMPO-Oxidized Cellulose with High Degree of Oxidation
title_fullStr TEMPO-Oxidized Cellulose with High Degree of Oxidation
title_full_unstemmed TEMPO-Oxidized Cellulose with High Degree of Oxidation
title_short TEMPO-Oxidized Cellulose with High Degree of Oxidation
title_sort tempo-oxidized cellulose with high degree of oxidation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6418784/
https://www.ncbi.nlm.nih.gov/pubmed/30965725
http://dx.doi.org/10.3390/polym9090421
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