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Preparation and the antibacterial activity of silver-loaded Chitosan-grafted-vanillin sol

Authors :
Jing AN
Guizhen GUO
Qingzhi LUO
Xueyan LI
Rong YIN
Desong WANG
Source :
Journal of Hebei University of Science and Technology, Vol 37, Iss 4, Pp 357-363 (2016)
Publication Year :
2016
Publisher :
Hebei University of Science and Technology, 2016.

Abstract

In order to enhance the antibacterial activity of chitosan and expand its application field, silver nanoparticles are introduced into the matrix, and the grafting modification is carried out. Chitosan grafted vanillin (CS-g-VA) is prepared with microwave-radiation method, and silver nitrate is reduced by vanillin, so that silver nanoparticles are separated evenly in CS-g-VA sol, which is Ag/CS-g-VA composite sol. The effects on the preparation of Ag/CS-g-VA composite sol are studied, and the structure and thermal property of the obtained composite sol are characterized by SEM, TEM, FTIR, XRD, UV-vis and TG-DSC. The experiment results show that the optimum conditions for the preparation of Ag/CS-g-VA are as following: Vanillin concentration of 6.0%, CS-g-VA concentration of 4.0%, and silver nitrate concentration of 0.20 mol/L. The inhibition of Ag/CS-g-VA composite sol against Escherichia coli and Bacillus subtilis is investigated through antibacterial tests. The results show that the antibacterial activity of Ag/CS-g-VA composite sol is more efficient than that of single CS materials.

Details

Language :
Chinese
ISSN :
10081542
Volume :
37
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Journal of Hebei University of Science and Technology
Publication Type :
Academic Journal
Accession number :
edsdoj.66ec64735ac74da491b83adec9b6acc9
Document Type :
article
Full Text :
https://doi.org/10.7535/hbkd.2016yx04007