Open AccessInfluence of the formulation variables on the viscosity of anionic surfactant-oil-water emulsions.
Author(s) -
Gerson Chávez,
Irán Parra,
Milangel Luzardo,
Bélgica Bravo,
Nacarid Delgado,
Nelson Márquez
Publication year - 2014
Publication title -
química nova
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.214
H-Index - 73
eISSN - 1678-7064
pISSN - 0100-4042
DOI - 10.5935/0100-4042.20140035
Subject(s) - pulmonary surfactant , viscosity , water in oil , emulsion , chemical engineering , oil viscosity , chemistry , petroleum engineering , materials science , organic chemistry , composite material , geology , engineering
Phase transition and viscosity behavior of emulsified systems were studied after modifying their physicochemical formulation. Effects of concentration and nature of salts and n-alcohols, and water/oil relation on the rheological properties of emulsions were also studied. Pre-equilibrated systems were emulsified according to an agitation procedure, and the viscosity (cP) was measured at different shear rates ranging from 1 to 300 s-1. The phase behavior, as well as the emulsion type based on electrolytic conductivity, was observed. Several interpretations of the flow and viscosity curves of emulsions were made through the estimation of rheological parameters such as consistency index "k" and behavior index "n"