Aggregation of microparticles of a water-soluble polycrystalline substance in pores

We have proposed synthesis of polydisperse particles of poorly soluble substances through precipitation in pores of a water-soluble matrix. As a matrix, we used sucrose pressed under mass production conditions. In its pores, we obtained highly dispersed BaSO4 particles precipitated by reacting Ba(NO3)2 and Na2SO4. The BaSO4 particles were separated from the aqueous phase using a track-etched membrane filter and characterized by electron microscopy.