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Synthesis and Characterization of Hydrophobically Modified Xylans
Xylan is a major type of hemicellulose that has attracted a lot of research and development activities. It is often derivatized in order to improve its properties. In the literature, hydrophobic modification of polymers is often used to produce surfactant-like materials and associative thickeners. I...
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/PMC7835788/ https://www.ncbi.nlm.nih.gov/pubmed/33477583 http://dx.doi.org/10.3390/polym13020291 |
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author | Cheng, Huai N. Biswas, Atanu Kim, Sanghoon Alves, Carlucio R. Furtado, Roselayne F. |
author_facet | Cheng, Huai N. Biswas, Atanu Kim, Sanghoon Alves, Carlucio R. Furtado, Roselayne F. |
author_sort | Cheng, Huai N. |
collection | PubMed |
description | Xylan is a major type of hemicellulose that has attracted a lot of research and development activities. It is often derivatized in order to improve its properties. In the literature, hydrophobic modification of polymers is often used to produce surfactant-like materials and associative thickeners. In this work, we have derivatized xylan with alkyl ketene dimer (AKD) and two types of alkenyl succinic anhydrides (ASAs). The xylan-AKD derivatives have been made at 90 °C, using dimethyl sulfoxide as solvent and 4-dimethylaminopyridine as promoter. Samples with degrees of substitution (DS) up to 0.006 have been produced. The xylan-ASA derivatives have been synthesized at 120 °C in dimethyl sulfoxide with DS up to 0.105–0.135. The structures of these products have been confirmed with NMR and FT-IR. These xylan derivatives increase the structural diversity of xylan and provide additional options for people seeking to use hydrophobically modified polysaccharides in their applications. |
format | Online Article Text |
id | pubmed-7835788 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-78357882021-01-27 Synthesis and Characterization of Hydrophobically Modified Xylans Cheng, Huai N. Biswas, Atanu Kim, Sanghoon Alves, Carlucio R. Furtado, Roselayne F. Polymers (Basel) Article Xylan is a major type of hemicellulose that has attracted a lot of research and development activities. It is often derivatized in order to improve its properties. In the literature, hydrophobic modification of polymers is often used to produce surfactant-like materials and associative thickeners. In this work, we have derivatized xylan with alkyl ketene dimer (AKD) and two types of alkenyl succinic anhydrides (ASAs). The xylan-AKD derivatives have been made at 90 °C, using dimethyl sulfoxide as solvent and 4-dimethylaminopyridine as promoter. Samples with degrees of substitution (DS) up to 0.006 have been produced. The xylan-ASA derivatives have been synthesized at 120 °C in dimethyl sulfoxide with DS up to 0.105–0.135. The structures of these products have been confirmed with NMR and FT-IR. These xylan derivatives increase the structural diversity of xylan and provide additional options for people seeking to use hydrophobically modified polysaccharides in their applications. MDPI 2021-01-18 /pmc/articles/PMC7835788/ /pubmed/33477583 http://dx.doi.org/10.3390/polym13020291 Text en © 2021 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 Cheng, Huai N. Biswas, Atanu Kim, Sanghoon Alves, Carlucio R. Furtado, Roselayne F. Synthesis and Characterization of Hydrophobically Modified Xylans |
title | Synthesis and Characterization of Hydrophobically Modified Xylans |
title_full | Synthesis and Characterization of Hydrophobically Modified Xylans |
title_fullStr | Synthesis and Characterization of Hydrophobically Modified Xylans |
title_full_unstemmed | Synthesis and Characterization of Hydrophobically Modified Xylans |
title_short | Synthesis and Characterization of Hydrophobically Modified Xylans |
title_sort | synthesis and characterization of hydrophobically modified xylans |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7835788/ https://www.ncbi.nlm.nih.gov/pubmed/33477583 http://dx.doi.org/10.3390/polym13020291 |
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