Sürdürülebilir Kalkınma Amaçları

• 2

• MakaleYalnız künye2019Scopus SJRQ2/r/munzur/3549
  Silver/Selenium/Chitosan-doped Hydroxyapatite coatings on biological NiTi alloy: In vitro biodegradation analysis

  Say, Y.; Aksakal, B.

  Abstract: Nitinol (NiTi) substrates were bioceramic coated by single layer Hydroxyapatite (HA), double layer HA/Silver (Ag) and double-layered HA/Selenium (Se)–Chitosan (Cht) substitutions by sol–gel method. Surface morphologies and adhesion strengths of the obtained coatings were characterized by means of SEM, EDX, XRD, and adhesion tests. Crack-free coatings were obtained in single layer-HA (S1), double layer HA/Ag (S2), and double-layered HA/Selenium–Cht (S3) coatings on NiTi alloys executed via the sol–gel method. Degradation behavior was analyzed in via simulated body fluid (SBF) environment by means of weight loss (%) and ion release rates for 1–4 weeks of immersion periods. The degraded coating particles were measured and metallic ions were detected quantitatively by an inductively coupled plasma–mass spectrometer (ICP–MS). The results show that such coatings could minimize and/or prevent the degradation of metallic ions and weight loss (%) from the coated substrates. From the overall results, HA/Ag double layer biocomposite (S2)-coated NiTi substrates revealed the highest adhesion strength and lowest weight loss and degradation. It was also shown in all groups that the Ni ion release from the NiTi substrates was prevented by the coatings. [Figure not available: see fulltext.].

  • 
  AtıfScopus10·WoS9·OpenAlex11

  İncele
• MakaleYalnız künye2017Scopus SJRQ2/r/munzur/3882
  The effect and characterization of newly synthesized SrBr2 reinforced bone grafts on structure and cell viability

  Demirel, Mehtap; Aksakal, Bünyamin; Kaya, Ali İhsan

  Abstract: In this study, a highly durable SrBr2 compound was added to Ca(NO3)2·4H2O, KOH, NaNO3, P2O5, and urea (CO(NH2)2) compounds at different ratios (wt 10–30%); biografts were synthesized in different compositions using the sol gel method They were characterized using X-ray diffraction, Fourier transform infrared spectrometer, scanning electron microscope, and mechanical tests e.g. hardness and compression. Structural, mechanical properties and cell viabilities of the synthesized biografts were comparatively examined. Fourier transform infrared spectrometer and X-ray diffraction analysis results showed that, including SrBr2, hydroxyapatite had formed in the biografts. Also, hardness and compression tests revealed that compressive stress and hardness values of the grafts increased as the amount of SrBr2 increased. The cell viability ratios also enhanced with the amount of SrBr2 increased in the synthesized biografts. Graphical Abstract: [InlineMediaObject not available: see fulltext.]

  • 
  AtıfScopus2·WoS2·OpenAlex3

  İncele