A novel approach was developed to introduce antimicrobial property into hydrogel network without any reductants. Ag nanoparticles coated hemicelluloses-based hydrogel was prepared by reduction of Ag ions in cross-linked dialdehyde hemicelluloses (DHC)/chitosan hydrogels. The structure and morphology of hydrogels were characterized by FT-IR, 1H and 13C NMR, SEM, and TEM. The results of FT-IR and NMR indicated that the hydrogel formed through the Schiff-Base reaction between the amino groups of chitosan chains and the aldehyde groups of DHC. The swelling property of hydrogel was decreased sharply after the addition of silver ions, and the equilibrium swelling ratio was decreased from 1129 g/g to 54.8 g/g. The DHC/chitosan/Ag hydrogel possessed an antimicrobial activity against the model microbes Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive), which was a promising antimicrobial material for the applications in the biomedical field.

Hemicellulose-based hydrogel containing Ag nanoparticles for antibacterial application

249th National Meeting (2015)

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