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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...

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Autores principales: Cheng, Huai N., Biswas, Atanu, Kim, Sanghoon, Alves, Carlucio R., Furtado, Roselayne F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
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.
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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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