TY - JOUR
T1 - Bioactivity behavior evaluation of pcl-chitosan-nanobaghdadite coating on AZ91 magnesium alloy in simulated body fluid
AU - Soleymani, Farzad
AU - Emadi, Rahmatollah
AU - Sadeghzade, Sorour
AU - Tavangarian, Fariborz
N1 - Publisher Copyright:
© 2020 by the authors.
PY - 2020/3/1
Y1 - 2020/3/1
N2 - Polymer-ceramic composite coatings on magnesium-based alloys have attracted lots of attention in recent years, to control the speed of degradability and to enhance bioactivity and biocompatibility. In this study, to decrease the corrosion rate in a simulated body fluid (SBF) solution for long periods, to control degradability, and to enhance bioactivity, polycaprolactone-chitosan composite coatings with different percentages of baghdadite (0 wt. %, 3 wt. %, and 5 wt. %) were applied to an anodized AZ91 alloy. According to the results of the immersion test of the composite coating containing 3 wt. % baghdadite in a phosphate buffer solution (PBS), the corrosion rate decreased from 0.45 (for the AZ91 sample) to 0.11 mg/cm2h after seven days of immersion. To evaluate the apatite formation capability of specimens, samples were immersed in an SBF solution. The results showed that the samples were bioactive as apatite layers formed on the surface of specimens. The composite coating containing 3 wt. % baghdadite showed the highest apatite-formation capability, with a controlled release of ions, and the lowest corrosion rate in the SBF.
AB - Polymer-ceramic composite coatings on magnesium-based alloys have attracted lots of attention in recent years, to control the speed of degradability and to enhance bioactivity and biocompatibility. In this study, to decrease the corrosion rate in a simulated body fluid (SBF) solution for long periods, to control degradability, and to enhance bioactivity, polycaprolactone-chitosan composite coatings with different percentages of baghdadite (0 wt. %, 3 wt. %, and 5 wt. %) were applied to an anodized AZ91 alloy. According to the results of the immersion test of the composite coating containing 3 wt. % baghdadite in a phosphate buffer solution (PBS), the corrosion rate decreased from 0.45 (for the AZ91 sample) to 0.11 mg/cm2h after seven days of immersion. To evaluate the apatite formation capability of specimens, samples were immersed in an SBF solution. The results showed that the samples were bioactive as apatite layers formed on the surface of specimens. The composite coating containing 3 wt. % baghdadite showed the highest apatite-formation capability, with a controlled release of ions, and the lowest corrosion rate in the SBF.
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U2 - 10.3390/coatings10030231
DO - 10.3390/coatings10030231
M3 - Article
AN - SCOPUS:85083055231
SN - 2079-6412
VL - 10
JO - Coatings
JF - Coatings
IS - 3
M1 - 231
ER -