Facile synthesis of chitosan/Ag-waterborne polyurethane composite films with a high stability and controllable water resistance for potential application in antibacterial materials

Waterborne polyurethane (WPU) and Ag NPs have been applied widely in packaging. However, WPU was susceptible to the contamination due to high moisture absorption, and the stability of Ag NPs in matrix polymers was still low. To resolve this problem, chitosan (CS) was used as the dispersant to synthe...

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Autores principales:	Youliang Cheng, Ying Wei, Changqing Fang, Hang Li, Jing Chen, Jin Zhang, Zhigang Huang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Silver nanoparticles Chitosan Waterborne polyurethane Antibacterial films Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/f7f3b26aa9004580bd33573f9e2f4fa5
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spelling	oai:doaj.org-article:f7f3b26aa9004580bd33573f9e2f4fa52021-11-18T04:49:14ZFacile synthesis of chitosan/Ag-waterborne polyurethane composite films with a high stability and controllable water resistance for potential application in antibacterial materials2238-785410.1016/j.jmrt.2021.10.126https://doaj.org/article/f7f3b26aa9004580bd33573f9e2f4fa52021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S223878542101262Xhttps://doaj.org/toc/2238-7854Waterborne polyurethane (WPU) and Ag NPs have been applied widely in packaging. However, WPU was susceptible to the contamination due to high moisture absorption, and the stability of Ag NPs in matrix polymers was still low. To resolve this problem, chitosan (CS) was used as the dispersant to synthesize CS/Ag NPs composites in this work, and then they were mixed with WPU to prepare CS/Ag-WPU films. CS macromolecules provided the carriers for Ag NPs with a diameter of about 2.5 nm, and Ag NPs were dispersed stably in WPU. Compared with pure WPU film, as-prepared CS/Ag-WPU films had a higher thermal stability at low temperature, and the crystal size for WPU increased after introducing CS/Ag NPs. Importantly, the water contact angle for CS/Ag-WPU-5 increased to 54.2° from 27.5° implying that the hydrophobicity was improved. In addition, CS/Ag-WPU composites exhibited an excellent inhibitory effect on Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). Antibacterial performances of most samples were improved with the crease of the concentration of CS, and the inhibitory effect on S. aureus was preferred. Therefore, as-prepared CS/Ag-WPU films in this paper have a potential application in antibacterial packaging field.Youliang ChengYing WeiChangqing FangHang LiJing ChenJin ZhangZhigang HuangElsevierarticleSilver nanoparticlesChitosanWaterborne polyurethaneAntibacterial filmsMining engineering. MetallurgyTN1-997ENJournal of Materials Research and Technology, Vol 15, Iss , Pp 5316-5325 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Silver nanoparticles Chitosan Waterborne polyurethane Antibacterial films Mining engineering. Metallurgy TN1-997
spellingShingle	Silver nanoparticles Chitosan Waterborne polyurethane Antibacterial films Mining engineering. Metallurgy TN1-997 Youliang Cheng Ying Wei Changqing Fang Hang Li Jing Chen Jin Zhang Zhigang Huang Facile synthesis of chitosan/Ag-waterborne polyurethane composite films with a high stability and controllable water resistance for potential application in antibacterial materials
description	Waterborne polyurethane (WPU) and Ag NPs have been applied widely in packaging. However, WPU was susceptible to the contamination due to high moisture absorption, and the stability of Ag NPs in matrix polymers was still low. To resolve this problem, chitosan (CS) was used as the dispersant to synthesize CS/Ag NPs composites in this work, and then they were mixed with WPU to prepare CS/Ag-WPU films. CS macromolecules provided the carriers for Ag NPs with a diameter of about 2.5 nm, and Ag NPs were dispersed stably in WPU. Compared with pure WPU film, as-prepared CS/Ag-WPU films had a higher thermal stability at low temperature, and the crystal size for WPU increased after introducing CS/Ag NPs. Importantly, the water contact angle for CS/Ag-WPU-5 increased to 54.2° from 27.5° implying that the hydrophobicity was improved. In addition, CS/Ag-WPU composites exhibited an excellent inhibitory effect on Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). Antibacterial performances of most samples were improved with the crease of the concentration of CS, and the inhibitory effect on S. aureus was preferred. Therefore, as-prepared CS/Ag-WPU films in this paper have a potential application in antibacterial packaging field.
format	article
author	Youliang Cheng Ying Wei Changqing Fang Hang Li Jing Chen Jin Zhang Zhigang Huang
author_facet	Youliang Cheng Ying Wei Changqing Fang Hang Li Jing Chen Jin Zhang Zhigang Huang
author_sort	Youliang Cheng
title	Facile synthesis of chitosan/Ag-waterborne polyurethane composite films with a high stability and controllable water resistance for potential application in antibacterial materials
title_short	Facile synthesis of chitosan/Ag-waterborne polyurethane composite films with a high stability and controllable water resistance for potential application in antibacterial materials
title_full	Facile synthesis of chitosan/Ag-waterborne polyurethane composite films with a high stability and controllable water resistance for potential application in antibacterial materials
title_fullStr	Facile synthesis of chitosan/Ag-waterborne polyurethane composite films with a high stability and controllable water resistance for potential application in antibacterial materials
title_full_unstemmed	Facile synthesis of chitosan/Ag-waterborne polyurethane composite films with a high stability and controllable water resistance for potential application in antibacterial materials
title_sort	facile synthesis of chitosan/ag-waterborne polyurethane composite films with a high stability and controllable water resistance for potential application in antibacterial materials
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/f7f3b26aa9004580bd33573f9e2f4fa5
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Facile synthesis of chitosan/Ag-waterborne polyurethane composite films with a high stability and controllable water resistance for potential application in antibacterial materials

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