title: Dielectric and electric properties of new chitosan-hydroxyapatite materials for biomedical application: Dielectric spectroscopy and corona treatment.
abstract: Chitosan-hydroxyapatite composite materials were synthesized and the possibility to make their surface charged by corona discharge treatment has been evaluated. Dielectric and electric properties of the materials were studied by dielectric spectroscopy, including application of equivalent circuits method and computer simulations. Dielectric spectroscopy shows behavior of the materials quite different from that of both chitosan and HA alone. The obtained dielectric permittivity data are of particular interest in predicting the materials' behavior in electrostimulation after implantation. The ε values observed at physiological temperature in the frequency ranges applied are similar to ε data available for bone tissues.
authors.affiliation: University Hospital "Dr. Georgi Stranski", Pleven, Bulgaria; Department of Experimental Physics, Physics Faculty, University of Plovdiv, Bulgaria.
authors.forename: Ivo
authors.initials: I
authors.lastname: Petrov
authors.affiliation: Institute of Applied Physics, Sumy, Ukraine; Sumy State University, Sumy, Ukraine.
authors.forename: Oksana
authors.initials: O
authors.lastname: Kalinkevich
authors.affiliation: Sumy State University, Sumy, Ukraine.
authors.forename: Maksym
authors.initials: M
authors.lastname: Pogorielov
authors.affiliation: Institute of Applied Physics, Sumy, Ukraine; Sumy State University, Sumy, Ukraine. Electronic address: kalinkevich@gmail.com.
authors.forename: Aleksei
authors.initials: A
authors.lastname: Kalinkevich
authors.affiliation: Institute of Applied Physics, Sumy, Ukraine.
authors.forename: Aleksandr
authors.initials: A
authors.lastname: Stanislavov
authors.affiliation: Sumy State Pedagogical University, Sumy, Ukraine.
authors.forename: Anatoly
authors.initials: A
authors.lastname: Sklyar
authors.affiliation: Institute of Applied Physics, Sumy, Ukraine.
authors.forename: Sergei
authors.initials: S
authors.lastname: Danilchenko
authors.affiliation: Department of Experimental Physics, Physics Faculty, University of Plovdiv, Bulgaria.
authors.forename: Temenuzhka
authors.initials: T
authors.lastname: Yovcheva
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry*; D048271:Chitosan / Q000737:chemistry*; D058266:Dielectric Spectroscopy; D017886:Durapatite / Q000737:chemistry*; D008422:Materials Testing
chemical_list: D001672:Biocompatible Materials; D048271:Chitosan; D017886:Durapatite
keywords: Chitosan; Composite; Corona discharge; Dielectric spectroscopy; Electric properties; Hydroxyapatite