Demineralised water is used as the external phase.
Moreover, decreasing drug solubility in the external phase has caused a significant increase in drug loading.
The independent variables were aciclovir and gelatin (added to the external phase of the emulsion).
Apparently there is insufficient flow of the external phase between the fibres.
This paper describes bicontinuous polyHIPEs, the simultaneous polymerization of hydrophobic monomers (external phase) and hydrophilic monomers (internal phase).
Hence, solute depletion rate in the external phase is enhanced, over and above that of a diffusion-limited reaction.
This effect was attributed to the increase of the external phase viscosity, which decreases the molecular diffusion rate and Ostwald ripening phenomenon.
The biodiesel selected is eligible for external phase of drilling fluid owing to its high flash point, acceptable viscosity, low toxicity, no fluorescence, and reliable storage stability.
The variables selected include phase volume ratio, surfactant concentration (CSA), sonication time (TSO) and the viscosity of the external phase silicone oil.
Moreover, addition of NaCl in the external phase maximized drug entrapment but minimized burst release and produced smaller and denser particles.
The effect of agitator speed, duration of agitation, xylene concentration in the membrane phase, membrane to external phase (M/E) ratio on the reduction of solute, concentration of biological oxygen demand (BOD) and chemical oxygen demand (COD) in the external phase has been studied.
