We have successfully used continuous microwave flowsynthesis (CMFS) technique for the template free synthesis
of mesoporous hydroxyapatite. The continuous microwave flow reactor consisted of a modified 2.45 GHz
household microwave, peristaltic pumps and a Teflon coil. This cost effective and efficient systemwas exploited
to produce semi-crystalline phase pure nano-sized hydroxyapatite. Effect of microwave power, retention time
and the concentration of reactants on the phase purity, degree of crystallinity and surface area of the final product
was studied in detail. X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) were used to
study the phase purity and composition of the product, while transmission electron microscopy (TEM) was
used to study the effect of process parameters on themorphology of hydroxyapatite. The TEManalysis confirmed
the formation of spherical particles at lowmicrowave power; however the morphology of the particles changed
to mesoporous needle and rod-like structure upon exposing the reaction mixture to higher microwave power
and longer retention time inside the microwave. The in-vitro ion dissolution behavior of the as synthesized hydroxyapatite
was studied by determining the amount of Ca2+ ion released in SBF solution.