Article ID Journal Published Year Pages File Type
238101 Powder Technology 2010 5 Pages PDF
Abstract

Cubic calcium carbonate nanoparticles with hydrophobic properties were prepared by a carbonation route in the presence of dodecanoic acid at 20 °C. The as-prepared products were characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and contact angle analysis. It was found that dodecanoic acid not only inhibited the growth of CaCO3 particles but also changed the surface properties of the final products. The effects of the weight ratio of DA to CaCO3, the calcium hydroxide concentration and temperature on the morphologies of the as-prepared calcium carbonate were systematically studied. The results showed that temperature, the weight ratio of DA to CaCO3 and the calcium hydroxide concentration are important parameters for the preparation of cubic calcium carbonate nanoparticles with hydrophobic properties.

Graphical abstractCubic calcium carbonate nanoparticles with hydrophobic properties could be prepared by a carbonation route in the presence of dodecanoic acid at 20 °C. When the weight ratio of DA reached to 3.92 wt.% or more, the contact angle of CaCO3 nanoparticles increased slowly and the product was hydrophobic completely.Figure optionsDownload full-size imageDownload as PowerPoint slide

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Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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