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- Title
Preparation and analysis on graphene oxide-silver/graphene oxide/chitosan composite antibacterial dressing.
- Authors
Liu Haohuai; He Zhizhou; Wang Yufei; Peng Lingxi
- Abstract
Graphene oxide was prepared by the modified Hummers method and ultrasonic peeling method. Ammoniacal silver solution and green glucose were added to the fresh achieved graphene oxide suspension to prepare graphene oxidesilver (GO-Ag) nanoparticles. The prepared GO-Ag nanoparticles were incorporated into chitosan and graphene oxide to prepare graphene oxide-silver/graphene oxide/chitosan (GO-Ag/GO/CS) composites. The structure and properties of GO-Ag/GO/CS composite were investigated by SEM, XRD, TG, tensile test and antibacterial test. SEM and XRD analysis indicate that GO-Ag is successfully compounded with graphene oxide and chitosan mixture. Tensile test show that the incorporation of graphene oxide into chitosan matrix can effectively improve the tensile strength of GO-Ag/GO/CS composite, especially the wet-state tensile strength. Thermogravimetric analysis indicate that the incorporation of graphene oxide has a slight effect on the thermal stability of CS. The results of antibacterial test illustrate that when the addition of GO-Ag particles is 5. 0 mg, the bacteriostatic rate of GO・Ag/GO/CS against S. aureus and E. coli can reach 98. 40% and 100%, respectively, showing excellent bacteriostatic effect.
- Subjects
GRAPHENE oxide; ANTIBACTERIAL agents; SURGICAL dressings; SILVER nanoparticles; SCANNING electron microscopy
- Publication
Journal of Southeast University (English Edition), 2023, Vol 39, Issue 4, p416
- ISSN
1003-7985
- Publication type
Article
- DOI
10.3969/j.issn.1003-7985.2023.04.011