Formation of nanoemulsion with long chain oil by W/O microemulsion dilution method

The preparation of nanoemulsions using long chain oil (C20 to C33) with remarkably small droplet size by microemulsion dilution method is generally difficult. In this work, a simple, W/O microemulsion dilution method was used to prepare O/W nanoemulsions with long chain oil in water/Span 80 − Tween 80/paraffin system. With the increase of dilution temperature from 40 to 80 °C, the emulsion droplet diameter decreased from 1.2 μm to 61 nm. The...