Formation of hydroxyapatite coatings with addition of chitosan from aqueous solutions by thermal substrate method
Journal Title: Журнал інженерних наук - Year 2017, Vol 4, Issue 2
Abstract
The aim of this investigation was obtaining of biocompatible coatings for medical implants based on biopolymer chitosan and hydroxyapatite, which is the main mineral component of bone tissue. Coatings were obtained by thermal substrate method, because it allows low temperature deposition and provides possibility to incorporate into coating structure biomolecules, unstable at high temperatures. As a way of chitosan incorporation into coating composition co-precipitation method was proposed. It allows obtaining uniform coatings with required composition and morphology. The obtained coatings were investigated by using of XRD, SEM with EDS, adhesion was tested by test-tape method. It was assigned that chitosan addition decreased hydroxyapatite crystallinity, so the range of concentrations from 0.01 to 0.1 g/L was chosen at pH = 6.5. It was determined that variation of chitosan concentrations in the initial solution influenced on morphology and structure of hydroxyapatite coatings as well as on the antibacterial properties and the use in orthopedics and dentistry. The best characteristics were obtained for hydroxyapatite-chitosan coatings deposited from solution with chitosan concentration 0.025 g/L.
Authors and Affiliations
G. O. Yanovska, S. B. Bolshanina, V. M. Kuznetsov
Keywords
Related Articles
- EP ID EP246549
- DOI 10.21272/jes.2017.4(2).f1
- Views 67
- Downloads 0
Polymeric compositional materials based on polycarbonate for units of devices for transform solar into thermal energy
Modern development of the industry is complicated without introduction of energy-saving technologies based on renewable natural energy sources. Solar and wind power plants, heat generators, solar collectors are wide spre...
Model of the management program for a means complex of the design works automation as a finite-state automaton
For software development it is necessary to have its mathematical model. It is established that for a means complex of the design works automation a model of a finite automaton is the best choice. The automatic machine h...
Analytical determination of the frequency of short circuits of the arc at surfacing in gas dioxide with welding pool mechanical oscillations
A hypothesis has been put forward that it is possible to reduce the degree of splashing when sur-facing into carbon dioxide due to the setting of the frequency characteristics of the oscillation of the weld pool. Equatio...
Diamond Grinding the Ceramic Balls from Silicon Carbide
The influence of the machining regime was experimentally investigated on the output indexes of the diamond grinding the ceramic balls from silicon carbide, such as the rate of the material removal and the rate of changin...
Overview of Control Techniques for Multicellular Converter
The structure multicellular converters, which appeared at the beginning of the 1990s, makes it possible to share the constraints in tension and it also improves the harmonic contents of the wave forms. To benefit as well...