Phase Behavior of Commercial AES/Ethanol/H2O Ternary System |
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| Authors: | Yunling Liu Hongsing Tan Hongyuan Wei |
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| Institution: | 1. Tianjin University, School of Chemical Engineering and Technology, Tianjin, China;2. Procter and Gamble, Beijing, China |
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| Abstract: | Phase behavior containing alkyl ethoxysulfates (AES), ethanol, and H2O over the whole concentration range was explored at 25°C. The system exhibited an isotropic solution phase (L), two different liquid crystalline phases: hexagonal phase (H), lamellar phase (Lα), and a biphasic region appearing with the ethanol concentration increasing. Polarized optical microscopy and small angle x-ray scattering were applied to characterize liquid crystalline phases. Direct two-phase titration and liquid chromatography–mass spectrometry (LC–MS) were employed to analyze the AES activity and homologues composition of the particles appearing in two-phase region. |
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| Keywords: | AES LC–MS liquid crystalline phase POM SAXS |
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