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Polymers 2018, 10(10), 1058;

Cellulose–Chitosan Antibacterial Composite Films Prepared from LiBr Solution

Department of Biological and Environmental Science, Dongguk University-Ilsan, Biomedical Campus, Goyang-si, Ilsandong-gu 10326, Korea
The Institute of Forest Science, Kangwon National University, Chuncheon Campus, 1 Gangwondaehakgil, Chuncheon-si, Gangwon-do 24341, Korea
Author to whom correspondence should be addressed.
Received: 31 August 2018 / Revised: 21 September 2018 / Accepted: 22 September 2018 / Published: 23 September 2018
(This article belongs to the Special Issue Biodegradable Polymers—Where Are We and Where to Go)
PDF [2084 KB, uploaded 23 September 2018]


Cellulose and chitosan solutions were prepared in 60% LiBr and mixed with a different weight ratio. The washing and drying of the prepared cellulose–chitosan composite films were performed under identical conditions. The color of the liquefied mixtures and films was initially transparent but changed from colorless to brownish yellow depending on the ratio of chitosan in the solution. The cross section observed in the SEM results indicated that the film developed with a higher ratio of chitosan was more robust and possessed greater antibacterial properties. FT-IR analysis of the films showed that hydrogen bonds between cellulose and chitosan in composite films were successfully achieved and retained excellent mechanical properties. The proper ratio of chitosan in the cellulose solution can increase the tensile strength and improve the elongation of the films; however, the E-modulus property was consistently reduced. The antibacterial activity and mechanical properties of the films were greatly improved as the amount of chitosan in the film increased. View Full-Text
Keywords: cellulose; chitosan; composite; LiBr; antibacterial cellulose; chitosan; composite; LiBr; antibacterial

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Yang, J.; Kwon, G.-J.; Hwang, K.; Kim, D.-Y. Cellulose–Chitosan Antibacterial Composite Films Prepared from LiBr Solution. Polymers 2018, 10, 1058.

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