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Bio-Catalysis for the Functionalization of Cellulose Nanocrystals
In this work, the chemical modification of cellulose nanocrystals (NCs) using an enzyme as a catalyst has been performed by a “grafting from” reaction, in order to covalently functionalize the external surface of NCs with both poly(L-lactic acid) (PLLA) and poly(ε-caprolactone) (PCL) by ring-opening...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9693080/ https://www.ncbi.nlm.nih.gov/pubmed/36432349 http://dx.doi.org/10.3390/nano12224064 |
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author | Peponi, Laura Barrera-Rivera, Karla A. Kenny, José M. Marcos-Fernandez, Ángel Martinez-Richa, Antonio López, Daniel |
author_facet | Peponi, Laura Barrera-Rivera, Karla A. Kenny, José M. Marcos-Fernandez, Ángel Martinez-Richa, Antonio López, Daniel |
author_sort | Peponi, Laura |
collection | PubMed |
description | In this work, the chemical modification of cellulose nanocrystals (NCs) using an enzyme as a catalyst has been performed by a “grafting from” reaction, in order to covalently functionalize the external surface of NCs with both poly(L-lactic acid) (PLLA) and poly(ε-caprolactone) (PCL) by ring-opening polymerization. Firstly, cellulose nanocrystals were prepared from commercial cellulose microcrystals by acid hydrolysis and then functionalized by using Yarrowia lipolytica lipase immobilized on Lewatit resin as a catalyst. To confirm the success of the grafting reactions, (1)H-NMR has been performed as well as FT-IR and Raman spectroscopy. Moreover, thermogravimetric analysis has been used to determine the amount of polymeric chains grafted onto the surface of cellulose nanocrystals. Furthermore, the crystalline nature of the polymeric chains grafted onto the cellulose surface has been studied by DSC, X-ray scattering, as well as SAXS analysis. To our knowledge, it is the first time that a biocatalyst approach has been used to obtain biopolymeric functionalized cellulose nanocrystals. |
format | Online Article Text |
id | pubmed-9693080 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-96930802022-11-26 Bio-Catalysis for the Functionalization of Cellulose Nanocrystals Peponi, Laura Barrera-Rivera, Karla A. Kenny, José M. Marcos-Fernandez, Ángel Martinez-Richa, Antonio López, Daniel Nanomaterials (Basel) Article In this work, the chemical modification of cellulose nanocrystals (NCs) using an enzyme as a catalyst has been performed by a “grafting from” reaction, in order to covalently functionalize the external surface of NCs with both poly(L-lactic acid) (PLLA) and poly(ε-caprolactone) (PCL) by ring-opening polymerization. Firstly, cellulose nanocrystals were prepared from commercial cellulose microcrystals by acid hydrolysis and then functionalized by using Yarrowia lipolytica lipase immobilized on Lewatit resin as a catalyst. To confirm the success of the grafting reactions, (1)H-NMR has been performed as well as FT-IR and Raman spectroscopy. Moreover, thermogravimetric analysis has been used to determine the amount of polymeric chains grafted onto the surface of cellulose nanocrystals. Furthermore, the crystalline nature of the polymeric chains grafted onto the cellulose surface has been studied by DSC, X-ray scattering, as well as SAXS analysis. To our knowledge, it is the first time that a biocatalyst approach has been used to obtain biopolymeric functionalized cellulose nanocrystals. MDPI 2022-11-18 /pmc/articles/PMC9693080/ /pubmed/36432349 http://dx.doi.org/10.3390/nano12224064 Text en © 2022 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 Peponi, Laura Barrera-Rivera, Karla A. Kenny, José M. Marcos-Fernandez, Ángel Martinez-Richa, Antonio López, Daniel Bio-Catalysis for the Functionalization of Cellulose Nanocrystals |
title | Bio-Catalysis for the Functionalization of Cellulose Nanocrystals |
title_full | Bio-Catalysis for the Functionalization of Cellulose Nanocrystals |
title_fullStr | Bio-Catalysis for the Functionalization of Cellulose Nanocrystals |
title_full_unstemmed | Bio-Catalysis for the Functionalization of Cellulose Nanocrystals |
title_short | Bio-Catalysis for the Functionalization of Cellulose Nanocrystals |
title_sort | bio-catalysis for the functionalization of cellulose nanocrystals |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9693080/ https://www.ncbi.nlm.nih.gov/pubmed/36432349 http://dx.doi.org/10.3390/nano12224064 |
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