The surfactant affinity depends on the HLB, local conditions such as the type of oil, the surfactant concentration,
the temperature, the oil–water volume fraction, and the
presence of other additives.[18]
The O=W nanoemulsion more stable evaluated by accelerated test was that presenting HLB value, having a /O=W
value of 0.15, contain 0.15 oil=water weight ratio, 5.0% surfactants (Ceteth-10 and sorbitan monooleate in HLB
10.32), 15% paraffin, and 80% distillated water.
Table 1 represents size distribution for percentage of
differents sample dilutions (quadriplicate measurements).
Depending on the dilution, the droplet sizes don’t vary