Bioactive Polymer-apatite Coatings with Antimicrobial Properties on Model Titanium Implants

Authors L.F. Sukhodub1 , L.B. Sukhodub1 , M.O. Kumeda1, A.P. Denysenko1, M.I. Kravchenko2

1Sumy State University, 2, Rymsky-Korsakov St., 40007 Sumy, Ukraine

2Sumy National Agrarian University, 160, Gerasim Kondratiev St., 40000 Sumy, Ukraine

Issue Volume 12, Year 2020, Number 3
Dates Received 03 February 2020; revised manuscript received 15 June 2020; published online 25 June 2020
Citation L.F. Sukhodub, L.B. Sukhodub, M.O. Kumeda, et al., J. Nano- Electron. Phys. 12 No 3, 03025 (2020)
PACS Number(s) 87.85.J –, 87.64.Bx, 87.64.Ee
Keywords Zinc sulfide, Alginate, Hydroxyapatite, Antibacterial properties, Thermal substrate deposition.

Bioactive hydroxyapatite (HA) coatings containing zinc sulfide (ZnS) and alginate (Alg) were obtained on model titanium substrates by thermal substrate deposition (TSD) method. HA-based coatings provide implants for bioactivity and ZnS acts as an antimicrobial agent. It is proved that the introduction of Alg into the ZnS structure reduces the particle size, which contributes to the increased antimicrobial activity of the coatings. The antimicrobial activity of ZnS and ZnS/Alg layers was investigated by agar diffusion microbiological method. ZnS and ZnS/Alg provide the growth inhibition zones for E. coli ATCC No. 25922-5 and 11 mm, for S. aureus ATCC No. 25923-5 and 10 mm, for K. pneumonia No. 93-7 and 12 mm, respectively. The morphology and structure of the coatings were determined by X-ray diffraction (XRD), X-ray fluorescence analysis (RFA) and scanning electron microscopy (SEM). The obtained data confirmed the formation of a single-phase ZnS layer on the HA surface. The results presented underline the formation of biocomposite coatings with the functions of biocompatibility and antimicrobial activity.

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