Sol-Gel Silica Particles lor Controlled Release Applications

摘要

Using sol-gel technology combined with water-in-oil (W/O) emulsions, we have developed an innovative method for producing ceramic particles with independent control over the release rate and particle size. The average particle size can be varied from 10 mn to 100 urn and is controlled by the emulsion chemistry. The release rate can be independently varied from mg/hours to mg/month, and is controlled by the internal microstructurc of the particles and the initial sol-gel chemistry.