title: Construction of cellulose based ZnO nanocomposite films with antibacterial properties through one-step coagulation.
abstract: Cellulose based ZnO nanocomposite (RCZ) films were prepared from cellulose carbamate-NaOH/ZnO solutions through one-step coagulation in Na2SO4 aqueous solutions. The structure and properties of RCZ films were characterized using XRD, FTIR, XPS, SEM, TEM, TG, tensile testing, and antibacterial activity tests. The content of ZnO in RCZ films was obtained in the range of 2.7-15.1 wt %. ZnO nanoparticles with a hexagonal wurtzite structure agglomerated into large particles, which firmly embedded in the cellulose matrix. RCZ films displayed good mechanical properties and high thermal stability. Moreover, the films exhibited excellent UV-blocking properties and antibacterial activities against Staphylococcus aureus and Escherichia coli. A dramatic reduction in viable bacteria was observed within 3 h of exposure, while all of the bacteria were killed within 6 h. This work provided a novel and simple pathway for the preparation of regenerated cellulose films with ZnO nanoparticles for application as functional biomaterials.
authors.affiliation: Department of Chemistry and Key Laboratory of Biomedical Polymers of Ministry of Education, Wuhan University , Luojia Hill, Wuhan 430072, China.
authors.forename: Feiya
authors.initials: F
authors.lastname: Fu
authors.forename: Lingyan
authors.initials: L
authors.lastname: Li
authors.forename: Lianjie
authors.initials: L
authors.lastname: Liu
authors.forename: Jun
authors.initials: J
authors.lastname: Cai
authors.forename: Yaping
authors.initials: Y
authors.lastname: Zhang
authors.forename: Jinping
authors.initials: J
authors.lastname: Zhou
authors.forename: Lina
authors.initials: L
authors.lastname: Zhang
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology; D002482:Cellulose / Q000737:chemistry*; D004926:Escherichia coli / Q000187:drug effects; D053761:Nanocomposites / Q000737:chemistry*; D013211:Staphylococcus aureus / Q000187:drug effects; D015034:Zinc Oxide / Q000737:chemistry* / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D002482:Cellulose; D015034:Zinc Oxide
keywords: ZnO nanoparticles; antibacterial; cellulose; nanocomposite film; one-step coagulation