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Production of Nanocellulose by Enzymatic Treatment for Application in Polymer Composites

In the last few years, the scientific community around the world has devoted a lot of attention to the search for the best methods of obtaining nanocellulose. In this work, nanocellulose was obtained in enzymatic reactions with strictly defined dispersion and structural parameters in order to use it...

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Autores principales: Zielińska, Daria, Szentner, Kinga, Waśkiewicz, Agnieszka, Borysiak, Sławomir
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8122419/
https://www.ncbi.nlm.nih.gov/pubmed/33922118
http://dx.doi.org/10.3390/ma14092124
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author Zielińska, Daria
Szentner, Kinga
Waśkiewicz, Agnieszka
Borysiak, Sławomir
author_facet Zielińska, Daria
Szentner, Kinga
Waśkiewicz, Agnieszka
Borysiak, Sławomir
author_sort Zielińska, Daria
collection PubMed
description In the last few years, the scientific community around the world has devoted a lot of attention to the search for the best methods of obtaining nanocellulose. In this work, nanocellulose was obtained in enzymatic reactions with strictly defined dispersion and structural parameters in order to use it as a filler for polymers. The controlled enzymatic hydrolysis of the polysaccharide was carried out in the presence of cellulolytic enzymes from microscopic fungi—Trichoderma reesei and Aspergillus sp. It has been shown that the efficiency of bioconversion of cellulose material depends on the type of enzymes used. The use of a complex of cellulases obtained from a fungus of the genus Trichoderma turned out to be an effective method of obtaining cellulose of nanometric dimensions with a very low polydispersity. The effect of cellulose enzymatic reactions was assessed using the technique of high-performance liquid chromatography coupled with a refractometric detector, X-ray diffraction, dynamic light scattering and Fourier transform infrared spectroscopy. In the second stage, polypropylene composites with nanometric cellulose were obtained by extrusion and injection. It was found by means of X-ray diffraction, hot stage optical microscopy and differential scanning calorimetry that nanocellulose had a significant effect on the supermolecular structure, nucleation activity and the course of phase transitions of the obtained polymer nanocomposites. Moreover, the obtained nanocomposites are characterized by very good strength properties. This paper describes for the first time that the obtained cellulose nanofillers with defined parameters can be used for the production of polymer composites with a strictly defined polymorphic structure, which in turn may influence future decision making about obtaining materials with controllable properties, e.g., high flexibility, enabling the thermoforming process of packaging.
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spelling pubmed-81224192021-05-16 Production of Nanocellulose by Enzymatic Treatment for Application in Polymer Composites Zielińska, Daria Szentner, Kinga Waśkiewicz, Agnieszka Borysiak, Sławomir Materials (Basel) Article In the last few years, the scientific community around the world has devoted a lot of attention to the search for the best methods of obtaining nanocellulose. In this work, nanocellulose was obtained in enzymatic reactions with strictly defined dispersion and structural parameters in order to use it as a filler for polymers. The controlled enzymatic hydrolysis of the polysaccharide was carried out in the presence of cellulolytic enzymes from microscopic fungi—Trichoderma reesei and Aspergillus sp. It has been shown that the efficiency of bioconversion of cellulose material depends on the type of enzymes used. The use of a complex of cellulases obtained from a fungus of the genus Trichoderma turned out to be an effective method of obtaining cellulose of nanometric dimensions with a very low polydispersity. The effect of cellulose enzymatic reactions was assessed using the technique of high-performance liquid chromatography coupled with a refractometric detector, X-ray diffraction, dynamic light scattering and Fourier transform infrared spectroscopy. In the second stage, polypropylene composites with nanometric cellulose were obtained by extrusion and injection. It was found by means of X-ray diffraction, hot stage optical microscopy and differential scanning calorimetry that nanocellulose had a significant effect on the supermolecular structure, nucleation activity and the course of phase transitions of the obtained polymer nanocomposites. Moreover, the obtained nanocomposites are characterized by very good strength properties. This paper describes for the first time that the obtained cellulose nanofillers with defined parameters can be used for the production of polymer composites with a strictly defined polymorphic structure, which in turn may influence future decision making about obtaining materials with controllable properties, e.g., high flexibility, enabling the thermoforming process of packaging. MDPI 2021-04-22 /pmc/articles/PMC8122419/ /pubmed/33922118 http://dx.doi.org/10.3390/ma14092124 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
Zielińska, Daria
Szentner, Kinga
Waśkiewicz, Agnieszka
Borysiak, Sławomir
Production of Nanocellulose by Enzymatic Treatment for Application in Polymer Composites
title Production of Nanocellulose by Enzymatic Treatment for Application in Polymer Composites
title_full Production of Nanocellulose by Enzymatic Treatment for Application in Polymer Composites
title_fullStr Production of Nanocellulose by Enzymatic Treatment for Application in Polymer Composites
title_full_unstemmed Production of Nanocellulose by Enzymatic Treatment for Application in Polymer Composites
title_short Production of Nanocellulose by Enzymatic Treatment for Application in Polymer Composites
title_sort production of nanocellulose by enzymatic treatment for application in polymer composites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8122419/
https://www.ncbi.nlm.nih.gov/pubmed/33922118
http://dx.doi.org/10.3390/ma14092124
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