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Effect of Nano-Silica and Sorbitol on the Properties of Chitosan-Based Composite Films

Chitosan and its derivatives are widely used in food packaging, pharmaceutical, biotechnology, medical, textile, paper, agriculture, and environmental industries. However, the flexibility of chitosan films is extremely poor, which limits its relevant applications to a large extent. In this paper, ch...

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Detalles Bibliográficos
Autores principales: Zhang, Wei, Zhou, Wentao, Zhang, Zisen, Zhang, Di, Guo, Zhengzheng, Ren, Penggang, Liu, Fei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10575191/
https://www.ncbi.nlm.nih.gov/pubmed/37836064
http://dx.doi.org/10.3390/polym15194015
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author Zhang, Wei
Zhou, Wentao
Zhang, Zisen
Zhang, Di
Guo, Zhengzheng
Ren, Penggang
Liu, Fei
author_facet Zhang, Wei
Zhou, Wentao
Zhang, Zisen
Zhang, Di
Guo, Zhengzheng
Ren, Penggang
Liu, Fei
author_sort Zhang, Wei
collection PubMed
description Chitosan and its derivatives are widely used in food packaging, pharmaceutical, biotechnology, medical, textile, paper, agriculture, and environmental industries. However, the flexibility of chitosan films is extremely poor, which limits its relevant applications to a large extent. In this paper, chitosan/sorbitol/nano-silica (CS/sorbitol/SiO(2)) composite films were prepared by the casting film method using chitosan, sorbitol, Tween-80 and nano-SiO(2) as raw materials. The structure of the films was characterized by infrared spectroscopy, electron scanning microscopy, and X-ray diffraction analysis. The effects of sorbitol and nano-silica dosage on the mechanical properties, thermal properties and water vapor barrier properties of the composite film were investigated. The results show that with the gradual increase in sorbitol (≤75 wt %), the elongation at the break of chitosan/sorbitol films significantly increased. When the addition of sorbitol was 75 wt %, the elongation at break of the chitosan/sorbitol composite film was 13 times higher than that of the chitosan film. Moreover, nano-SiO(2) can further improve the mechanical properties and thermal stability of the chitosan/sorbitol composite films. When the amount of nano-silica was 4.5 wt %, the composite film became more flexible, with a maximum elongation of 90.8% (which is 14 times that of chitosan film), and its toughness increased to 10.52 MJm(−3) (which is 6 times that of chitosan film). This study balances the tensile strength and elongation at break of the composite films by adding a plasticizer and nano-filler, providing a reference for the preparation of chitosan composites or their blending with other polymers, and has practical guiding significance for the industrial production of biomass plastics.
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spelling pubmed-105751912023-10-14 Effect of Nano-Silica and Sorbitol on the Properties of Chitosan-Based Composite Films Zhang, Wei Zhou, Wentao Zhang, Zisen Zhang, Di Guo, Zhengzheng Ren, Penggang Liu, Fei Polymers (Basel) Article Chitosan and its derivatives are widely used in food packaging, pharmaceutical, biotechnology, medical, textile, paper, agriculture, and environmental industries. However, the flexibility of chitosan films is extremely poor, which limits its relevant applications to a large extent. In this paper, chitosan/sorbitol/nano-silica (CS/sorbitol/SiO(2)) composite films were prepared by the casting film method using chitosan, sorbitol, Tween-80 and nano-SiO(2) as raw materials. The structure of the films was characterized by infrared spectroscopy, electron scanning microscopy, and X-ray diffraction analysis. The effects of sorbitol and nano-silica dosage on the mechanical properties, thermal properties and water vapor barrier properties of the composite film were investigated. The results show that with the gradual increase in sorbitol (≤75 wt %), the elongation at the break of chitosan/sorbitol films significantly increased. When the addition of sorbitol was 75 wt %, the elongation at break of the chitosan/sorbitol composite film was 13 times higher than that of the chitosan film. Moreover, nano-SiO(2) can further improve the mechanical properties and thermal stability of the chitosan/sorbitol composite films. When the amount of nano-silica was 4.5 wt %, the composite film became more flexible, with a maximum elongation of 90.8% (which is 14 times that of chitosan film), and its toughness increased to 10.52 MJm(−3) (which is 6 times that of chitosan film). This study balances the tensile strength and elongation at break of the composite films by adding a plasticizer and nano-filler, providing a reference for the preparation of chitosan composites or their blending with other polymers, and has practical guiding significance for the industrial production of biomass plastics. MDPI 2023-10-07 /pmc/articles/PMC10575191/ /pubmed/37836064 http://dx.doi.org/10.3390/polym15194015 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
Zhang, Wei
Zhou, Wentao
Zhang, Zisen
Zhang, Di
Guo, Zhengzheng
Ren, Penggang
Liu, Fei
Effect of Nano-Silica and Sorbitol on the Properties of Chitosan-Based Composite Films
title Effect of Nano-Silica and Sorbitol on the Properties of Chitosan-Based Composite Films
title_full Effect of Nano-Silica and Sorbitol on the Properties of Chitosan-Based Composite Films
title_fullStr Effect of Nano-Silica and Sorbitol on the Properties of Chitosan-Based Composite Films
title_full_unstemmed Effect of Nano-Silica and Sorbitol on the Properties of Chitosan-Based Composite Films
title_short Effect of Nano-Silica and Sorbitol on the Properties of Chitosan-Based Composite Films
title_sort effect of nano-silica and sorbitol on the properties of chitosan-based composite films
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10575191/
https://www.ncbi.nlm.nih.gov/pubmed/37836064
http://dx.doi.org/10.3390/polym15194015
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