title: Phase behavior of the alpha-hydroxyoctanoic acid/Laureth 4/white oil/water system and preliminary evaluation of the phase changes during evaporation of its emulsion.
abstract: The phase diagram was determined for the alpha-hydroxyoctanoic acid/Laureth 4/white oil/water system using visual observation with an optical microscope. Typical emulsions were evaporated to determine the structural changes. These were compared to those predicted from the phase diagram. Small-angle x-ray diffraction was used to determine the location of the alpha-hydroxyoctanoic acid in the lamellar liquid crystal. The most important result is the fact that irrespective of initial composition, the final result was a suspension of solid acid particles with dissolved oil and surfactant in a surfactant/oil liquid with only minute amounts of solubilized acid.
authors.affiliation: Chemistry Department/Faculty of Science, University of Jordan, Amman 11942, Jordan.
authors.forename: Abeer
authors.initials: A
authors.lastname: Al-Bawab
authors.forename: Stig E
authors.initials: SE
authors.lastname: Friberg
mesh_terms: D002210:Caprylates / Q000737:chemistry*; D004655:Emulsions; D006880:Hydroxy Acids / Q000737:chemistry*; D009821:Oils / Q000737:chemistry*; D000077423:Polidocanol; D011092:Polyethylene Glycols / Q000737:chemistry*; D014867:Water / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D002210:Caprylates; D004655:Emulsions; D006880:Hydroxy Acids; D009821:Oils; D014867:Water; D000077423:Polidocanol; D011092:Polyethylene Glycols