The Influence of Alkyl Polyglucosides (And Highly Ethoxylated Alcohol Boosters) on the Phase Behavior of a Water/Toluene/Technical Alkyl Polyethoxylate Microemulsion System
Nikolić-Mandić, Snežana D.
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The influence of additives (alkyl polyglucoside, Glucopon 600 CS UP and alcohol ethoxylate C18E100) on the behavior of the water/toluene/Lutensol ON 50 (technical oxoalcohol, i-C10E5) microemulsion system as a function of temperature and composition has been investigated. The phase behavior of the microemulsions was determined by vertical sections through the Gibbs phase prism (fish-like phase diagrams). Alkyl polyglucoside shifts the one phase region to lower temperatures compared with water/toluene/Lutensol ON 50 mixtures. This is contrary to the expectation, considering the extreme hydrophilic nature of the sugar headgroup. The addition of hydrophilic alcohol ethoxylate (C18E100) to the water/toluene/Lutensol ON 50 system increases the solubilization capacity of the surfactant, even if the co-surfactant is used in small quantities, and shifts the one-phase region to higher temperature by a few degrees C.
Keywords:microemulsion / toluene / alkyl polyglucoside / oxoalcohol ethoxylate / efficiency booster / fish diagrams
Source:Chemical Industry and Chemical Engineering Quarterly / CICEQ, 2016, 22, 1, 27-32
- Assoc Chemical Eng, Belgrade