Surface Modification of Nanosized Biphasic α-TCP/HA Powders
Stearic acid was utilized to modify biphasic alpha-tricalcium phosphate (α-TCP)/hydroxyapatite (HA) powders in the ethanol. The results showed that the dispersion of biphasic α-TCP/HA powders (BCPs) in non-polar matrix improved. And the released content of Ca2+ and PO4 3- of the BCPs soaked in the NaAc-HAc buffer solution (pH 5.0) was almost same as that before modification. Stearic acid could modify the suface properties of BCPs and would not obviously affect their biological characteristics, which affords a good groundwork of application of calcium phosphates powders.
Xingdong Zhang, Xudong Li, Hongsong Fan, Xuanyong Liu
L. L. Pan et al., "Surface Modification of Nanosized Biphasic α-TCP/HA Powders", Key Engineering Materials, Vols. 330-332, pp. 223-226, 2007