The effect of MgCl2.6H2O and NaF on properties of Chitosan / HAAl2O3 Scaffold

Document Type : Original Research Paper

Authors

1 Department of Material Engineering, Maybod Branch, Islamic Azad University, Maybod, Iran

2 Department of Material Engineering, Yazd Branch, Islamic Azad University, Yazd, Iran

3 Energy and Environmental Department, Materials and Energy Research Center, Karaj, Iran

10.22034/jna.2021.685597

Abstract

The HA- Al2O3 nanocomposite was produced by the precipitation method. In the
first study, the effect of MgCl2.6H2O and NaF additives on HA-Al2O3 nano-composite powder
were studied and the second, chitosan / HA- Al2O3 scaffold was prepared by
freeze casting method. The phase and microstructure and morphology analysis
of nanocomposite and scaffold were performed by XRD, FT-IR, FESEM, and TEM.
X-ray diffraction test results along with infrared spectroscopy indicated that, the
HA- Al2O3 nanocomposite without impurities was produced. TEM results showed
that the produced nano composite particle sizes were reported between 30-50
nm.
Moreover, the porosity percentages of scaffold without additive was about
56% and with NaF as an additive was about 63 %, however, the scaffold with
MgCl2.6H2O additive with 70% porosity had the highest porosity percentage. The
compressive strength of the SFA scaffold exhibited a two-fold strength compared
to the SMA scaffold, which indicated the improved mechanical compatibility of
the SFA scaffold.

Keywords