title: Stability of colloidal silver nanoparticles trapped in lipid bilayer: effect of lecithin concentration and applied temperature.
abstract: The use of silver nanoparticle on various substrates has been widespread because of its good antibacterial properties that directly depend on the stability of the silver nanoparticles in a colloidal suspension. In this study, the colloidal solutions of the silver nanoparticles were synthesised by a simple and safe method by using lecithin as a stabilising agent and their stability was examined at various temperatures. The effect of the lecithin concentrations on the stability of the synthesised silver nanoparticles was examined from 25 to 80°C at 5°C intervals, by recording the changes in the UV-vis absorption spectra, the hydrodynamic diameter and the light scattering intensity of the silver nanoparticles. In addition, the morphology of the synthesised silver nanoparticles was investigated with the low-voltage scanning electron microscopy and transmission electron microscopy. The results indicated that increasing temperature caused different changes in the size of the stabilised and the unstabilised silver nanoparticles. The size of the stabilised silver nanoparticles reduced from 38 to 36 nm during increasing temperature, which confirmed good stability.
authors.affiliation: Department of Carpet, Faculty of Art, University of Birjand, Birjand, Iran. barani@birjand.ac.ir.
authors.forename: Hossein
authors.initials: H
authors.lastname: Barani
authors.affiliation: Textile Engineering Department, Center of Excellence in Textile, Amirkabir University of Technology, Tehran, Iran.
authors.forename: Majid
authors.initials: M
authors.lastname: Montazer
authors.affiliation: Max Bergmann Center of Biomaterials, Leibniz Institute of Polymer Research Dresden, Hohe Strasse 6, D-01069 Dresden, Germany.
authors.forename: Hans-Georg
authors.initials: HG
authors.lastname: Braun
authors.affiliation: Engineering of Fibrous Smart Materials, Department of Engineering Technology, University of Twente, Enschede, The Netherlands.
authors.forename: Victoria
authors.initials: V
authors.lastname: Dutschk
mesh_terms: D004355:Drug Stability; D054709:Lecithins / Q000737:chemistry*; D008051:Lipid Bilayers / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D012834:Silver / Q000737:chemistry*; D013696:Temperature
chemical_list: D054709:Lecithins; D008051:Lipid Bilayers; D012834:Silver