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http://dx.doi.org/10.14478/ace.2018.1081

Study on the Gelling Formation and Anti-gelling Properties of Liquid Detergent Based on Sodium Lauryl Ethoxy Sulfate (SLES)  

Chi, Gyeong-Yup (Natural material fermentation for Cosmetic Laboratory, Division of Bio-Technology and Convergence, Daegu Haany University)
Publication Information
Applied Chemistry for Engineering / v.29, no.5, 2018 , pp. 620-625 More about this Journal
Abstract
Liquid detergent based on sodium lauryl ethoxy sulfate (SLES) as main ingredient sometimes met gelling film on the surface when it is opened in the air. It was assumed because of the change of phase diagram of micelle by concentration change of surfactant, major ingredient of detergent when the water of detergent is evaporated. SLES showed strong hexagonal liquid crystal (LC) in 30~60 wt%, and lamellar LC over 60 wt%. In this research surface gelling formation of liquid detergent which is based on SLES as main ingredient was because of water evaporation. As water of detergent was evaporated, concentration of surfactant became higher. It was checked that surface gelling was LC of mixed surfactant system. Conclusionally we applied alpha olefin sulfonate (AOS) having good solubility, Sodium secondary alkane sulfonate (SAS) preventing hexagonal LC and hydrotrope sodium xylene sulfonate (SXS) and PEG1500 in order to prevent gelling film in SLES based liquid detergent. Like this, improved formula 4 and 5 can prevent the formation of gelling film on the surface of liquid detergent when it is opened in the air.
Keywords
SLES; gelling formation; anti-gelling; liquid detergent; liquid crystal;
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