Abstract
A W/O/W-type dispersion was developed together with O/W emulsions during the mechanically simple agitation of a series of mixtures of liquid paraffin and water containing hydrophobic (Span 80) and hydrophilic (SDS or Tween 80) emulsifiers in each liquid phase. The presence of W/O/W emulsion globules among simple oil droplets was confirmed by optical microscopy, globule size analysis and viscometry. The yield of this dispersion increased markedly, while the amount of Span 80 in the oil phase increased at a relatively low concentration of SDS or Tween 80 in the aqueous phase. This may possibly cause formation of the W/O/W emulsion during ordinary emulsification, should the system be comprised of more than two types of emulsifiers.
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