Structural Properties of Apatite-Biopolymer Nanocomposites, Doped ZnO

Authors	O.O. Martynyuk¹, L.F. Sukhodub¹ , L.B. Sukhodub², A.M. Meshkov¹
Affiliations	¹ Sumy State University, 2, Rymsky Korsakov St., 40007 Sumy, Ukraine ² SI "Institute of Microbiology and Immunology, the Mechnikov I.I. AMS of Ukraine", 14/16, Pushkinska St., 61057 Kharkiv, Ukraine
Е-mail	martinyuk2010@yandex.ua
Issue	Volume 8, Year 2016, Number 4
Dates	Received 10 October 2016; published online 23 December 2016
Citation	O.O. Martynyuk, L.F. Sukhodub, L.B. Sukhodub, A.M. Meshkov, J. Nano- Electron. Phys. 8 No 4(2), 04090 (2016)
DOI	10.21272/jnep.8(4(2)).04090
PACS Number(s)	87.85.J –, 87.64.Bx, 87.64.Ee
Keywords	Hydroxyapatite, Zinc oxide (10) , Tricalcium phosphate, Composite (45) , Polymer (20) .
Annotation	The article is devoted to study the structure, morphology, mechanical properties, phase and elemental composition of synthesized nanostructured biopolymer apatite samples doped ZnO for the needs of orthopedics and dentistry. It is found that modified hydroxyapatite (HA) (Ca/P ~ 1,62-1,63) has increased the crystallites size compared to stoichiometric HA (Ca/P  1,67). As a result of annealing (900 C) is fixed the presence of phases three calcium phosphate and calcium zinc phosphate and reducing of a and c parameters of the HA unit cell. This is the result of the partial substitution of Са2+ for Zn2+ ions, which have different ionic radii (0,104 nm against 0,074 nm).
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