title: Synthesis and characterization of chitosan/ZnO nanoparticle composite membranes.
abstract: Novel chitosan/ZnO nanoparticle (CS/nano-ZnO) composite membranes were prepared via the method of sol-cast transformation and studied by UV-vis absorption spectroscopy (UV-vis), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray fluorescence spectrometry (EDX). The characterization revealed that ZnO nanoparticles dispersed homogeneously within the chitosan matrix. The mechanical and antibacterial properties of the product were investigated. The results showed that the ZnO content had an effect on the mechanical properties of CS/nano-ZnO composite membranes, and that the antibacterial activities of CS membranes for Bacillus subtilis, Escherichia coli, and Staphylococcus aureus were enhanced by the incorporation of ZnO. Further, CS/nano-ZnO composite membranes with 6-10 wt% ZnO exhibited high antibacterial activities.
authors.affiliation: College of Chemistry, Xiangtan University, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan 411105, Hunan, China.
authors.forename: Li-Hua
authors.initials: LH
authors.lastname: Li
authors.forename: Jian-Cheng
authors.initials: JC
authors.lastname: Deng
authors.forename: Hui-Ren
authors.initials: HR
authors.lastname: Deng
authors.forename: Zi-Ling
authors.initials: ZL
authors.lastname: Liu
authors.forename: Ling
authors.initials: L
authors.lastname: Xin
mesh_terms: D001412:Bacillus subtilis / Q000187:drug effects; D048271:Chitosan / Q000737:chemistry*; D004926:Escherichia coli / Q000187:drug effects; D008855:Microscopy, Electron, Scanning; D053761:Nanocomposites / Q000737:chemistry* / Q000633:toxicity / Q000648:ultrastructure; D053758:Nanoparticles / Q000737:chemistry* / Q000633:toxicity / Q000648:ultrastructure; D013052:Spectrometry, X-Ray Emission; D017550:Spectroscopy, Fourier Transform Infrared; D013211:Staphylococcus aureus / Q000187:drug effects; D014961:X-Ray Diffraction; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D048271:Chitosan; D015034:Zinc Oxide