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Preparation of Hollow Calcium Silicate Microparticles by Simple Emulsion

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DOI: 10.4236/jeas.2014.44012    3,344 Downloads   3,840 Views   Citations

ABSTRACT

Hollow calcium silicate microparticles were prepared by mixing a water-in-oil (W/O) emulsion containing silicate ions in aqueous phase with an oil phase containing a calcium/di-2-ethylhexyl phosphoric acid (D2EHPA) complex. The inorganic precipitation reaction at the oil-water interface was accelerated by using a simple W/O emulsion. Hollow microparticles were obtained when the mole ratio of D2EHPA and calcium in the oil phase was nearly 2:1. The shell formation of the par-ticles depended on the acceleration of the precipitation reaction, which could be accomplished by controlling the concentrations of the calcium and silicate ions.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Toorisaka, E. , Nagamatsu, S. , Saruwatari, Y. , Hirata, M. and Hano, T. (2014) Preparation of Hollow Calcium Silicate Microparticles by Simple Emulsion. Journal of Encapsulation and Adsorption Sciences, 4, 114-121. doi: 10.4236/jeas.2014.44012.

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