Precipitated Calcium Carbonate Synthesis by Simultaneous Injection to Produce Nano Whisker Aragonite

The synthesis of pure calcium carbonate nanocrystals was achieved using a simultaneous injection method to produce nano particles of uniform size.These were characterized using scanning electron microscopy and powder X-ray diffraction.The nano particles were needle-shaped aragonite polymorphs, approximately 100-200 nm in length.The aragonite polymorph of calcium carbonate was prepared using aqueous solutions of CaCl 2 and Na 2 CO 3 , which were injected simultaneously into double distilled water at 50°C and then allowed to react for 1.5 h.The resulting whisker-type nano aragonite with high aspect ratio (30) is biocompatible and potentially suitable for applications in light weight plastics, as well as in the medical, pharmaceutical, cosmetic and paint industries.