Preparation of colloidal AgBr particles from microemulsions

Synthesis of Nimesulide Nanoparticles in the Microemulsion Epikuron/Isopropyl Myristate/Water/n-Butanol (or Isopropanol)

“…However, it is well known that the size of the aqueous cores in reverse micelles is related to the amount of water (which is proportional to the R factor). For example, in the system of the microemulsion AOT/heptane/water, the size of the aqueous cores is related to the R factor: Radius (Å) = 1.8 R + 4.5 (12,22). Some experiments were devised to determine a similar relation.…”

“…In the preparation of the empty microemulsion, the total mass is 5 g and the mass of Epikuron is 2 g. Different values of factor R = [water]/[E170] have been used. This ratio is in general proportional to the diameter of the water droplet (12,22). Thus, for a determined R factor, it is easy to know the weight of the corresponding water.…”

“…This synthesis method has already been used in various bachelor theses (realized in our laboratory) for the preparation of organic nanoparticles (cholesterol, rhodiarome, or rhovanil) (10,11) or inorganic nanoparticles (AgBr, AgCl, Ni 2 B, Co 2 B). General reviews for the preparation of nanoparticles can be found in the literature (12)(13)(14)(15)(16)(17)(18)(19).…”

Modeling of nanoparticles formation by mixing of two reactive microemulsions

“…The intermicellar exchange rate plays a significant role in the nanoparticle formation and the effect has been studied Khilar 1997, 2000). Different research groups have obtained trends for the effect of intermicellar exchange rate (Bagwe and Khilar, 1997), water-to-surfactant molar ratio (Bagwe and Khilar, 1997;Monnoyer et al, 1995), and concentration of reactants (Monnoyer et al, 1995). Some controversies exist in the literature on the effect of these parameters on the terminal particle sizes.…”

“…Some controversies exist in the literature on the effect of these parameters on the terminal particle sizes. For instance, different research groups have reported qualitatively different findings on the effect of waterto-surfactant molar ratio on the terminal particle size (Bagwe and Khilar, 1997;Monnoyer et al, 1995;Motte et al, 1996).…”