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Extraction and Surface Functionalization of Cellulose Nanocrystals from Sugarcane Bagasse

The present study aimed to optimize the process for extracting cellulose nanocrystals (CNCs) from sugarcane bagasse through ultrasonic-assisted sulfuric acid hydrolysis and its subsequent modification with L-malic acid and silane coupling agent KH-550. The effects of the different modification metho...

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Autores principales: Tang, Sen, Chen, Zhipeng, Chen, Feifan, Lai, Xuanren, Wei, Qiaoyan, Chen, Xianling, Jiang, Caiyun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10386425/
https://www.ncbi.nlm.nih.gov/pubmed/37513316
http://dx.doi.org/10.3390/molecules28145444
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author Tang, Sen
Chen, Zhipeng
Chen, Feifan
Lai, Xuanren
Wei, Qiaoyan
Chen, Xianling
Jiang, Caiyun
author_facet Tang, Sen
Chen, Zhipeng
Chen, Feifan
Lai, Xuanren
Wei, Qiaoyan
Chen, Xianling
Jiang, Caiyun
author_sort Tang, Sen
collection PubMed
description The present study aimed to optimize the process for extracting cellulose nanocrystals (CNCs) from sugarcane bagasse through ultrasonic-assisted sulfuric acid hydrolysis and its subsequent modification with L-malic acid and silane coupling agent KH-550. The effects of the different modification methods and the order of modification on the structures and properties of bagasse CNCs were explored. The results indicated that the optimal process conditions were achieved at an acid-digestion temperature of 50 °C, a reaction time of 70 min, an ultrasonic power of 250 W, and a volume fraction of 55%. The modified CNCs were analyzed using infrared spectral, X-ray diffraction, and thermogravimetric techniques, which revealed that L-malic acid was attached to the hydroxyl group on the CNCs via ester bond formations, and the silane coupling agent KH-550 was adsorbed effectively on the CNCs’ surfaces. Moreover, it was observed that the modification of the CNCs by L-malic acid and the KH-550 silane coupling agent occurred only on the surface, and the esterification–crosslinking modification method provided the best thermal stability. The performance of self-made CNC was found to be superior to that of purchased CNC based on the transmission electron microscopy analysis. Furthermore, the modified esterified-crosslinked CNCs exhibited the best structure and performance, thereby offering a potential avenue for the high-value utilization of sugarcane bagasse, a byproduct of sugarcane sugar production, and the expansion of the comprehensive utilization of sugarcane bagasse.
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spelling pubmed-103864252023-07-30 Extraction and Surface Functionalization of Cellulose Nanocrystals from Sugarcane Bagasse Tang, Sen Chen, Zhipeng Chen, Feifan Lai, Xuanren Wei, Qiaoyan Chen, Xianling Jiang, Caiyun Molecules Article The present study aimed to optimize the process for extracting cellulose nanocrystals (CNCs) from sugarcane bagasse through ultrasonic-assisted sulfuric acid hydrolysis and its subsequent modification with L-malic acid and silane coupling agent KH-550. The effects of the different modification methods and the order of modification on the structures and properties of bagasse CNCs were explored. The results indicated that the optimal process conditions were achieved at an acid-digestion temperature of 50 °C, a reaction time of 70 min, an ultrasonic power of 250 W, and a volume fraction of 55%. The modified CNCs were analyzed using infrared spectral, X-ray diffraction, and thermogravimetric techniques, which revealed that L-malic acid was attached to the hydroxyl group on the CNCs via ester bond formations, and the silane coupling agent KH-550 was adsorbed effectively on the CNCs’ surfaces. Moreover, it was observed that the modification of the CNCs by L-malic acid and the KH-550 silane coupling agent occurred only on the surface, and the esterification–crosslinking modification method provided the best thermal stability. The performance of self-made CNC was found to be superior to that of purchased CNC based on the transmission electron microscopy analysis. Furthermore, the modified esterified-crosslinked CNCs exhibited the best structure and performance, thereby offering a potential avenue for the high-value utilization of sugarcane bagasse, a byproduct of sugarcane sugar production, and the expansion of the comprehensive utilization of sugarcane bagasse. MDPI 2023-07-16 /pmc/articles/PMC10386425/ /pubmed/37513316 http://dx.doi.org/10.3390/molecules28145444 Text en © 2023 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
Tang, Sen
Chen, Zhipeng
Chen, Feifan
Lai, Xuanren
Wei, Qiaoyan
Chen, Xianling
Jiang, Caiyun
Extraction and Surface Functionalization of Cellulose Nanocrystals from Sugarcane Bagasse
title Extraction and Surface Functionalization of Cellulose Nanocrystals from Sugarcane Bagasse
title_full Extraction and Surface Functionalization of Cellulose Nanocrystals from Sugarcane Bagasse
title_fullStr Extraction and Surface Functionalization of Cellulose Nanocrystals from Sugarcane Bagasse
title_full_unstemmed Extraction and Surface Functionalization of Cellulose Nanocrystals from Sugarcane Bagasse
title_short Extraction and Surface Functionalization of Cellulose Nanocrystals from Sugarcane Bagasse
title_sort extraction and surface functionalization of cellulose nanocrystals from sugarcane bagasse
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10386425/
https://www.ncbi.nlm.nih.gov/pubmed/37513316
http://dx.doi.org/10.3390/molecules28145444
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