Influence of ethylamine on the crystal growth of hydroxyapatite crystals

The ability of ethylamine to influence hydroxyapatite (HAp) crystal growth has been studied. HAp crystals were obtained from the mixture of HAp precur sor slurry and various amount of ethylamine under hydrothermal condition. T he products synthesized with 5 wt% or more ethylamine were plate-like cryst als whose grown face was a-plane of HAp. Several analyses suggested that th e role of ethylamine was the inhibition of crystal growth along a particula r axis.