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The characterization of the semi‐solid W/O/W emulsions with low concentrations of the primary polymeric emulsifier
Author(s) -
Vasiljevic D.,
Vuleta G.,
Primorac M.
Publication year - 2005
Publication title -
international journal of cosmetic science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 62
eISSN - 1468-2494
pISSN - 0142-5463
DOI - 10.1111/j.1467-2494.2004.00247.x
Subject(s) - emulsion , rheology , viscosity , chemistry , primary (astronomy) , peg ratio , chromatography , materials science , chemical engineering , analytical chemistry (journal) , organic chemistry , physics , composite material , finance , astronomy , engineering , economics
Synopsis Semi‐solid multiple W/O/W emulsions with low concentrations (0.8, 1.6 and 2.4% w/w) of lipophilic polymeric primary emulsifier PEG‐30‐dipolyhydroxystearate (PDHS) have been formulated. Both emulsions, primary and multiple, were prepared with high content of inner phase (Φ 1 = Φ 2 = 0.8). All the formulations differ only in the lipophilic emulsifier concentration. Evaluating several parameters such as macroscopic and microscopic aspect, droplet size, accelerated stability under centrifugation and flow and oscillatory rheological behaviour, assessed the multiple systems. It is possible to formulate the semi‐solid W/O/W multiple emulsions with low concentrations of PDHS as the primary emulsifier. It appeared that the highest long‐term stable multiple emulsion with the lowest droplet size, the highest apparent viscosity and highest elastic characteristic, was the sample with the highest concentration (2.4% w/w) of the primary emulsifier.