title: Synthesis and characterization of Ag/Cu/HAP with platelet morphology.
abstract: As a useful starting material in coating technology and preparation of HAP/polymers composites the platelet Ag/Cu/HAP was prepared using the solid solution of HAP reacting with the mix-solution of silver and copper nitrate. Its composition, microstructure and properties were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and anti-bacterial or bacteriostatic tests. The results demonstrate that the prepared Ag/Cu/HAP crystal is mainly comprised of HAP phase with little whitelockite and silver phosphate, stable up to 600 degrees C and takes a platelet shape. At 750 degrees C, it is partially changed into whitelockite, calcium copper phosphate, silver oxide and silver phosphate. The platelet Ag/Cu/HAP crystal has a preferential orientation of a-axis below 600 degrees C, above which the growth in a-axis is greatly inhibited. The Ag/Cu/HAP has good crystallinity at 600 degrees C and is the most effective powder in resisting bacteria among the HAP powders investigated. The platelet Ag/Cu/HAP crystal can be good starting materials to make antibacterial polymers/HAP composites and HAP coatings.
authors.affiliation: State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, P.R. China.
authors.forename: Hui
authors.initials: H
authors.lastname: Yang
authors.forename: Bingjuan
authors.initials: B
authors.lastname: Xiao
authors.forename: Ke-Wei
authors.initials: KW
authors.lastname: Xu
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000494:pharmacology; D018786:Bone Substitutes / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D020099:Coated Materials, Biocompatible / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D003300:Copper / Q000737:chemistry*; D003460:Crystallization; D017886:Durapatite / Q000737:chemistry*; D004926:Escherichia coli / Q000187:drug effects; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D010316:Particle Size; D033362:Powder Diffraction; D012834:Silver / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013295:Streptococcus mutans / Q000187:drug effects
chemical_list: D000900:Anti-Bacterial Agents; D018786:Bone Substitutes; D020099:Coated Materials, Biocompatible; D012834:Silver; D003300:Copper; D017886:Durapatite